Ch 4.3-4.9 Review 2025

The distribution ages of licensed drivers shopping at the Imperial Valley Mall are normally distributed with a mean of 48 and a standard deviation of 5. A person will be selected at random. Round your answers to the nearest hundredth.

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What is the probability that the person is age 40 or younger? (To the nearest hundredth of a percent)

The following stands for the number of cars with certain characteristics. C is for license plates with a C, S is for license plates with a S, and B is for plates with an B. 

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What is the probability of choosing a car that a license plate with a S? Round to the nearest percent.

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What is the probability of choosing a car with a C on it given they have a plate with a B on it? Round to the nearest percent.

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How many cars have both a C and S on the license plates?

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How many cars have exactly one characteristic?

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What is P(J)? Round to the nearest tenth of a percent.

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What is P(R)? Round to the nearest tenth of a percent.

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What is the probability of being picked if you are a junior and ride to school? Round to the nearest tenth of a percent.

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What is the probability of riding to school given that you are a sophomore? Round to the nearest tenth of a percent.

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What is P(J|R)? Round to the nearest tenth of a percent.

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The ratio of boys to girls in a math classroom is 9:7. There are 32 students in the classroom. What is the probability of choosing a girl? Express as a simplified fraction.

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The ratio of boys to girls in a math classroom is 9:7. There are 32 students in the classroom. How many girls are present?

The straight line depreciation equation for a car is y = -2,500x + 30,000.

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What is the original price of the car?

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How much value does the car lose per year?

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How many years will it take for the car to totally depreciate?

Kathy purchased a new car for $33,200. From her research she has determined that is straight line depreciates over 10 years. She made a $5,000 down payment and pays $480 per month for her loan. 

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Create an expense function

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Create a depreciation function.

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How many years will both expenses and the car's value be the same? round to the nearest tenth. (Use Desmos or algebra)

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Jerome purchased a car for $23,400 six years ago. It depreciated at 5.9% per year. What is its worth now? Round to the nearest hundred dollars.

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Jonathan’s car gets approximately 28 miles per gallon. He is planning a 560-mile trip. About how many gallons of gas will his car use for the trip?

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Richie was driving on an asphalt road with a 45 mi/h speed limit. A bicyclist veered into his lane, causing him to slam on his brakes. His tires left three skid marks of 69 ft, 70 ft, and 74 ft. The road had a drag factor of 1.2. His brakes were operating at 80% efficiency. The police gave Richie a ticket for speeding. Richie insisted that he was driving under the speed limit. Who is correct?

The straight line depreciation equation for a car is y = -2,400x + 36,000.

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What is the original price of the car?

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How much value does the car lose per year?

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How many years will it take for the car to totally depreciate?

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The historical prices of a car with the same make, model, and features are recorded for a period of 10 years in the table below.

determine the exponential appreciation formula using desmos.

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Jerome just purchased a 4-year-old car for $15,000. He was told that this make and model depreciates exponentially at 6.5% per year. What was the original price to the nearest hundred dollars?

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The following two-way table displays information about favorite sports cars from a survey given to all students at Shore High School. (round to the nearest percent)

Find P(C)

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The following two-way table displays information about favorite sports cars that resulted from a survey given to all students at Shore High School. (round to the nearest percent)

What is the probability that a randomly selected student from this school is a boy?

The distribution ages of licensed drivers bowling on a Friday night at Strikezone are normally distributed with a mean of 26 and a standard deviation of 3. A person will be selected at random. Round your answers to the nearest hundredth.

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What is the probability that the person is age 32 or younger? (To the nearest hundredth of a percent)

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The Jacksons are taking a trip to Miami, Florida. Mr. Jackson knows that it is about 1,608 miles to their destination Florida from their home in San Antonio, Texas. He knows the average speed along his route will be 70 miles per hour. How long is the drive? (Round to the nearest hour)

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You're traveling 35 mi/h when you see two young children crossing the street. What is your reaction distance?

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What is the approximate braking distance for a car traveling 55 mi/h?

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What is the probability that the person is age 40 or younger? (To the nearest hundredth of a percent)

What is the probability of choosing a car that a license plate with a S? Round to the nearest percent.

What is the probability of choosing a car with a C on it given they have a plate with a B on it? Round to the nearest percent.

How many cars have both a C and S on the license plates?

How many cars have exactly one characteristic?

What is P(J)? Round to the nearest tenth of a percent.

What is P(R)? Round to the nearest tenth of a percent.

What is the probability of being picked if you are a junior and ride to school? Round to the nearest tenth of a percent.

What is the probability of riding to school given that you are a sophomore? Round to the nearest tenth of a percent.

What is P(J|R)? Round to the nearest tenth of a percent.

The ratio of boys to girls in a math classroom is 9:7. There are 32 students in the classroom. What is the probability of choosing a girl? Express as a simplified fraction.

The ratio of boys to girls in a math classroom is 9:7. There are 32 students in the classroom. How many girls are present?

What is the original price of the car?

How much value does the car lose per year?

How many years will it take for the car to totally depreciate?

Create an expense function

Create a depreciation function.

How many years will both expenses and the car's value be the same? round to the nearest tenth. (Use Desmos or algebra)

Jerome purchased a car for $23,400 six years ago. It depreciated at 5.9% per year. What is its worth now? Round to the nearest hundred dollars.

Jonathan’s car gets approximately 28 miles per gallon. He is planning a 560-mile trip. About how many gallons of gas will his car use for the trip?

What is the original price of the car?

How much value does the car lose per year?

How many years will it take for the car to totally depreciate?

The historical prices of a car with the same make, model, and features are recorded for a period of 10 years in the table below.determine the exponential appreciation formula using desmos.

Jerome just purchased a 4-year-old car for $15,000. He was told that this make and model depreciates exponentially at 6.5% per year. What was the original price to the nearest hundred dollars?

The following two-way table displays information about favorite sports cars from a survey given to all students at Shore High School. (round to the nearest percent)Find P(C)

The following two-way table displays information about favorite sports cars that resulted from a survey given to all students at Shore High School. (round to the nearest percent)What is the probability that a randomly selected student from this school is a boy?

What is the probability that the person is age 32 or younger? (To the nearest hundredth of a percent)

The Jacksons are taking a trip to Miami, Florida. Mr. Jackson knows that it is about 1,608 miles to their destination Florida from their home in San Antonio, Texas. He knows the average speed along his route will be 70 miles per hour. How long is the drive? (Round to the nearest hour)

You're traveling 35 mi/h when you see two young children crossing the street. What is your reaction distance?

What is the approximate braking distance for a car traveling 55 mi/h?

Dustin is driving 45 mi/h on his way to work. He sees a dog 180 feet away. What will be his total stopping distance?

The historical prices of a car with the same make, model, and features are recorded for a period of 10 years in the table below.

determine the exponential appreciation formula using desmos.

The following two-way table displays information about favorite sports cars from a survey given to all students at Shore High School. (round to the nearest percent)

Find P(C)

The following two-way table displays information about favorite sports cars that resulted from a survey given to all students at Shore High School. (round to the nearest percent)

What is the probability that a randomly selected student from this school is a boy?