Question

The high temperatures for several days are shown in the table. Which answer describes the average rate of change from day 3 to day 5?

Day High Temperature (degrees)
1 67
2 63
3 59
4 58
5 53

A. -4
B. -2
C. -6
D. -3

Answer 1

D. -3

Explanation:

The temperature changes from 59 to 53 in those two days, so the average rate of change is ...

(change in temperature)/(change in days) = (53 -59)/(5 -3) = -6/2

= -3 . . . . degrees per day