4. The graph below shows how Manuel's height changed during the past year. Which conclusion can you make from the graph?

   

   6. His height is average.
   7. He will grow more next year.
   8. His height did not change during the year.
   9. His height steadily increased during the year.

5. All of the students in Haley's class received between 36 and 48 points on the last quiz. Each question was worth 2 points. There was no partial credit. How many questions could Haley have answered correctly?

   1. 12
   2. 21
   3. 44
   4. 72

6. Which cannot be represented by a linear function?

   6. the area of a square, given its side length
   7. the price of fruit, given the weight of the fruit
   8. the number of steps on a ladder, given the height
   9. the number of inches, given the number of yards

7. A light-year is the distance light travels in one year. One light-year is about 5.9 × 10 12 5.9 times , 10 to the twelfth  mi. If it takes light 3 months to travel from one star to another, about how far apart are the stars?

   1. 2 × 10 3 mi 2 times , 10 cubed , mi
   2. 1.5 × 10 4 mi 1.5 times , 10 to the fourth , mi
   3. 1.5 × 10 12 mi 1.5 times , 10 to the twelfth , mi
   4. 2 × 10 12 mi 2 times , 10 to the twelfth , mi

8. Use the graph below. Suppose the y-intercept increases by 2 and the slope stays the same. What will the x-intercept be?

   

   6. − 3 negative 3
   7. − 2 negative 2
   8. 1
   9. 4

9. At lunchtime, Mitchell makes his own salad. The salad bar costs $1.25 per pound. Suppose Mitchell's salad weighs 1.8 lb, what is the cost of his salad?

   1. $1.44
   2. $2.25
   3. $2.50
   4. $22.50

10. The dimensions of a rectangular prism are shown in the diagram below. Which expression represents the volume of the rectangular prism?

    

    6. a 2 b 5 eh squared , b to the fifth
    7. a 2 b 6 eh squared , b to the sixth
    8. a 4 b 5 eh to the fourth , b to the fifth
    9. a 4 b 6 eh to the fourth , b to the sixth

11. Suppose you are buying apples and bananas. The price of apples is $.40 each and the price of bananas is $.25 each. Which equation models the number of apples and bananas you can buy for $2?

    1. 40 x + 25 y = 200 40 x plus 25 y equals 200
    2. 40 x − 25 y = 2 40 x minus 25 y equals 2
    3. 5 x + 8 y = 200 5 x plus 8 y equals 200
    4. 5 x + 8 y = 2 5 x plus 8 y equals 2

12. At lunchtime, Mitchell cast a shadow 0.5 ft long while a nearby flagpole cast a shadow 2.5 ft long. If Mitchell is 5 ft 3 in. tall, how tall is the flagpole?

    6. 26 ft 3 in.
    7. 26 ft 4 in.
    8. 26 ft 5 in.
    9. 26 ft 6 in.

13. Laura rented a car that cost $20 for the day plus $.12 for each mile driven. She returned the car later that day. Laura gave the salesperson $50 and received change. Which inequality represents the possible numbers of miles m that she could have driven?

    1. 50 > 0.12 m + 20 50 greater than , 0.12 , m plus 20
    2. 50 < 0.12 m + 20 50 less than , 0.12 , m plus 20
    3. 50 > 0.12 m − 20 50 greater than , 0.12 , m minus 20
    4. 50 < 0.12 m − 20 50 less than , 0.12 , m minus 20

14. A doctor did a 6-month study on resting heart rate and exercise in healthy adults. The doctor found that for every 20 min of exercise added to a daily routine, the resting heart rate decreased by 1 beat per minute. According to the doctor's study, what does the resting heart rate depend on?

    6. the 6-month study
    7. minutes of exercise
    8. a daily routine
    9. diet

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