Question

The table shows the change in temperature each hour for four hours. Find the total change C in temperature.

Change in Temperature
6 A.M. - 7 A.M. −3°F
7 A.M. - 8 A.M. −2°F
8 A.M. - 9 A.M. +4°F
9 A.M. - 10 A.M. +6°F

Answer 1

9 degrees

6 degrees plus 3 is 9

Answer 2

5°F

Explanation:

From the given information it is clear that

Change in temperature for time interval 6 A.M. - 7 A.M = −3°F

Change in temperature for time interval 7 A.M. - 8 A.M = −2°F

Change in temperature for time interval 8 A.M. - 9 A.M = 4°F

Change in temperature for time interval 9 A.M. - 10 A.M = 6°F

The total change C in temperature is

`C=(-3^(\circ) F)+(-2^(\circ) F)+(4^(\circ) F)+(6^(\circ) F)`

`C=(-3-2+4+6)^(\circ) F`

`C=5^(\circ) F`

Therefore, the total change C in temperature is 5°F.