MATH 1306 – Homework Handout # 3

Answers To Odd-numbered Problems

1a.       Using approximate y-coordinates: at t = 13, y ≈ 8.5 , and at t = 20, y ≈ 5.5

            Average rate of change from t = 13 to t =20 is -0.429

1b.       On average, from 1 pm to 8 pm, the number of cars on the expressway decreased by 429 per hour.

1c.       Using approximate y-coordinates: at t = 6, y ≈ 5 , and at t = 8, y ≈ 10    

            C_[6,8] = 2.5

3a.       Using approximate y-coordinates: at m = 0, y ≈ 0 , and at m = 8, y ≈ 150

            Average rate of change from m=0 to m=8 is 18.75

3b.       On average, during the first eight minutes of Imani's workout, the total calories she burns increases by 18.75 calories per minute.

3c.       Using approximate y-coordinates: at m = 8, y ≈ 150 , and at m = 10, y ≈ 166

            T_[8,10] = 8