1.The following table represents the altitude of a hiker climbing a mountain over a 60-minute hike. Calculate the average rate of change over the interval from 0 to 30 minutes. A. The rate of change is about 2 feet per minute.

B. The rate of change is about 3 feet per minute.

C. The rate of change is about 90 feet per minute.

D. The rate of change is about 30 feet per minute.

2.A truck is leaving a post office and heading out to deliver mail. The table shows the truck's distance d from the post office at time t. Calculate the average rate of change over the interval from 8 to 15 minutes.

A. The rate of change is about 0.8 kilometers per minute.

B. The rate of change is 3.5 kilometers per minute.

C. The rate of change is 7 kilometers per minute.

D. The rate of change is 1 kilometer per minute.

3.Isaac knew he had to to study more in order to improve his math grades. Calculate the average rate of change over the interval from his first exam to his third exam.

A. The rate of change is 12 percent per exam.

B. The rate of change is 2 percent per exam.

C. The rate of change is about 5.5 percent per exam.

D. The rate of change is 6 percent per exam.

4.Find the average rate of change over the interval of 0 seconds to 60 seconds.

A. The rate of change is −2 inches per second.

B. The rate of change is 1 inch per second.

C. The rate of change is −1 inch per second.

D. The rate of change is 2 inches per second.

5.Find the average rate of change over the interval of 2 minutes to 11 minutes.

A. The rate of change is 19 of a kilometer per minute.

B. The rate of change is 9 kilometers per minute.

C. The rate of change is 13 of a kilometer per minute.

D. The rate of change is 3 kilometers per minute.

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