The temperature fell 36oF in 9 hours. If the temperature fell at the same rate every hour, which represents the change in temperature each hour?

4°F

Step-by-step explanation:

If the temperature fell 36°F in 9 hours, then;

36°F= 9hours

to get the change in temperature in 1 hour, we will say;

x°F = 1 hr

Since we have

36°F= 9hours

x°F = 1 hr

Cross multiply

9x = 1*36

9x = 36

x = 36/9

x = 4°F

Hence the change in temperature each hour is at 4°F

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.