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7th Math SBAC Prep Day 7 - 5/10

Last updated over 1 year ago

9 questions

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Objective and Summary:
SWBAT identify proportional relationships and  be able to calculate missing proportionality (ie. unit rates)

Question 1

1.

Road Trip—You are on a long road trip with your family and find that there is only half a gallon of gas left in the tank. The next gas station is 26 miles away.

a. Write an equation that will relate the driving range and the gallons of gas.

Question 2

2.

How far can your car travel with 18 gallons of gas? Use your equation.

Question 3

3.

Hybrid—Mr. Figueroa drives a hybrid car that can go much farther on a single gallon of gas because it also uses electricity to power the car.

a. Find the constant of proportionality and write an equation to find miles per gallon.

Question 4

4.

If Mr. Figueroa filled his car with 15 gallons of gas, how far could he drive? Use the equation to explain.

Question 5

5.

How many gallons of gas would it take for Mr. Figueroa to make the roundtrip drive from San Jose to LA? (Remember, this is about 672 miles.) Round your answer to the nearest hundredth.

Question 6

6.

Wake Up!—Angeline noticed that some of her classmates were falling asleep in class, so she decided to go to Wafesay to buy some coffee. It turns out that they sell coffee in a few different-sized bags:

a. How many dollars does each ounce of coffee cost? Is this proportional? Explain.

Question 7

7.

Use the relationship to predict the cost of a 20-ounce bag of coffee:

Question 8

8.

8. Still Proportional?—Mr. Kovalik loves to run (duh!), and his running pace is shown below.

a. Graph the relationship between miles and hours.
b. Is this a proportional relationship? Explain using the graph.

Question 9

9.

EXIT TICKET

Farming-- A farmer is working on calculating the sales of his apples bags (x) to strawberry bundles (y). They cannot identify if the relationship is proportional and is asking for your help. Identify the unit rate of each ratio, AND graph each point on the graph provided.