Answer:
(-1)(7+7+7)
EX
Explanation:
given data
change drastically each hour = 3 hour
temperature decreased = 7°F
solution
we get some option that are
7+7+7
7+7+7+7
(-1)(7+7+7)
(-7)+(-7)+(-7)+(-7)
First, as the temperature decreases, it means that the final answer is negative, or that the change must be multiplied by -1.
The temperature varies from 7. to every hour. There is also the question of whether the temperature changes for 3 hours. Hence the temperature change is from 3 7, or 7 + 7 + 7.
In the last we add -1 from the beginning because this is a negative temperature change, the answer is (-1) (7 + 7 + 7)