Foundations Of Functions Test Review

The scatterplot below shows the gas mileage and weight of different vehicles.  Which of the following is the best interpretation of this scattterplot?

• As the weight of the vehicle increases, the gas mileage stays the same.

• Vehicles that weigh the least seem to have higher gas mileage.

• Vehicles that weigh the most seem to have higher gas mileage.

• As the weight of the vehicle decreases, the gas mileage stays the same.

Which relationship below describes a positive correlation?  

• The amount of time I exercise and the calories that I burn.

• The number of times I brush my teeth each day and the number of cavities I have.

• The age of a tadpole and the length of its tail.

• The amount of time I spend studying and number of cupcakes I eat.

The scatterplot below shows the test scores and hours of study for a sample of college students. A student wants to earn a test score of 95.  Predict how many hours he should expect to study.

• About 40 hours

• About 35 hours

• About 50 hours

• About 33 hours

Buffalo Wings-R-Us is running a promotion on their rib baskets for $5.00 each.  Shelby decided to use her $50 gift card to buy rib baskets for herself and her friends.  This situation can be represented by the equation g = 50 – 5r. What does the ordered pair (10, 0) mean in this relationship?

• If Shelby purchases 0 rib baskets, she will have $10 remaining on her gift card.

• If Shelby purchases 0 rib baskets, she will have $40 remaining on her gift card.

• If Shelby purchases 10 rib baskets, her gift card will be worth $10.

• If Shelby purchases 10 rib baskets, her gift card will be worth $0.

Buffalo Wings-R-Us is running a promotion on their rib baskets for $5.00 each.  Shelby decided to use her $50 gift card to buy rib baskets for herself and her friends.  This situation can be represented by the equation g = 50 – 5r. Predict what would happen if Shelby purchased 15 rib baskets?

• She would have $7 remaining on the gift card.

• She would have $35 remaining on the gift card.

• She would have overspent by $15.

• She would have overspent by $25.

The scatterplot below shows the test scores and hours of study for a sample of college students. About how many hours of study should a college student expect to spend to earn a test score of 90?  

• 25 hours

• 40 hours

• 30 hours

• 35 hours

Abby took a trip to see her aunt and uncle in Lubbock, Texas.  The graph below represents her trip.         Which of the following describes the correct domain and range for the situation above?  

• Domain: The distance is from 0 to 600 miles. Range: The time is from 0 to 10 hours.

• Domain: The time is from 0 to 10 hours. Range: The distance is from 0 to 600 miles.

• Domain: The time is from 0 to 11 hours. Range: The distance is from 0 to 600 miles.

• Domain: The time is from 0 to 11 hours. Range: The distance is from 0 to 400 miles.

Michelle needs to sell 8 magazine subscriptions to attend the fundraising party and she plans to only sell 8 magazines.  Each subscription costs $10.  The graph below shows this relationship Which of the following statements is true about this relationship?

• The data for this relationship is continuous.

• The data for this relationship is discrete.

• The domain is $0 to $80, inclusive.

• The range is 0 to 8 magazines, inclusive.

Austin collected the data below in a survey he conducted with 9^th graders. If he entered the data into the lists of his graphing calculator, which window settings would be  appropriate for his survey data?  

• X min = 50, x max = 75, y min = 0, y max = 15

• X min = 60, x max = 75, y min = 5, y max = 10

• X min = 0, x max = 65, y min = 0, y max = 10

• X min = 0, x max = 15, y min = 50, y max = 75

Which of the following are the domain and range for the graph shown below?

Jason rides his bike at a rate of 12 miles per hour for 36 miles as shown in the graph below Which of the following statements is NOT true about this scenario?  

• The domain is from 0 to 3 hours, inclusive

• The range is from 0 to 36 miles, inclusive.

• The data for this scenario is continuous.

• The data for this scenario is discrete.

Buffalo Wings-R-Us is running a promotion on their rib baskets for $5.00 each.  Shelby decided to use her $50 gift card to buy rib baskets for herself and her friends.  This situation can be represented by the equation g = 50 – 5r. Which of the following statements is NOT true for this relationship?

• As the number of rib baskets purchased increases, the amount of money remaining on the gift card decreases.

• The number of rib baskets depends on the amount of money left on the gift card.

• The variable g in the equation represents the amount of money left on the gift card.

• The ordered pair (6, 20) fits this scenario and equation.