Question

at 3 pm, the outside temperature was 4°f. the temperature then fell steadily by 2°f every hour for the next four hours. what was the temperature at 7 pm?
a 8°f
b 4°f
c -2°f
d -4°f
o a
o b
o c
o d

Explanation:

Step1: Calculate total temperature drop

The temperature drops 2°F per hour for 4 hours. So the total drop is $2\times4 = 8$°F.

Step2: Find the final temperature

The initial temperature at 3 PM is 4°F. We subtract the total drop from the initial temperature. So the temperature at 7 PM is $4-8=- 4$°F.

Answer:

D. -4°F