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Laabri

Unit 7 Test

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Last updated about 2 years ago
19 Nsɛmmisa
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1.

If a tablespoon of fertilizer is required for 64 ounces of water, then how many tablespoons are in required for 3 gallons of water?

Note: There are 128 ounces in a gallon.

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2.

Mario traveled 40 miles in 25 minutes. If he continues at the same speed, how many miles should Mario travel in 2 hours? Label you answer.

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3.

Solve the proportion.

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4.

The cost of pizza varies on the number of toppings you order. Calculate the price for a topping based on the information in the table.

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5.

The cost of pizza varies on the number of toppings you order. Calculate the price of a pizza with no toppings.

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6.

Write an equation in slope-intercept form that models the linear relationship in the table.

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7.

From the previous problem, use your equation to calculate the cost of a deluxe pizza with six toppings.

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8.

A Google Pixel had an initial value of $699. After a year, the cell phone value dropped to $538. What is the average depreciation per month of the cell phone for its first year?

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9.

Kim tracks her car value over 10 years. Determine the slope from the following graph and explain it meaning.

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10.

Kim tracks her car value over 10 years. Determine the y-intercept from the following graph and explain it meaning.

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11.

Draw a trend line. Estimate and interpret the slope of the line.

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12.

Estimate and interpret the y-intercept of the trend line you drew in problem 11.

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13.

Identify the independent and dependent variables in the table provided.

Draggable itemarrow_right_altCorresponding Item

Age in years

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independent

Shoe Size (US)

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dependent

Height (cm)

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None of the above.

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14.

Use Desmos to create a scatterplot. Label the axes. Draw a trend line and write a linear model for your trend line. Round the slope & y-intercept to the nearest hundredth.

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15.

Using your equation from #14, predict the height for someone with a shoe size of 10 to the nearest centimeter.

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16.

Is your prediction in #15 an example of interpolation or extrapolation?

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17.

What is the correlation coefficient for the scatterplot you created in #14? Is this a strong or weak correlation?

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18.

Determine the following using the data in the table:

Match the correct value to the correct statistic.

Draggable itemarrow_right_altCorresponding Item

3.8 years

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Median

3 years

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Quartile 1

4.2 years

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Quartile 3

6 years

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Mean

1 year

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None of the above

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19.

Data collected on someone's age along with their annual income is an example of what kind of data?