Question

3. The outside temperature decreases by

7°F in 3 hours.
Part A
How would you represent the
temperature change as a unit rate?
Express your answer as an integer.
Part B
If the temperature continues to
decrease at this rate, what will be the
change in temperature after 5 hours?

Answer 1

A) 2f / hour

B) 10 f

Step-by-step explanation:

outside temperature decreases by ; 7 F in 3 1/2 hours

a ) represent temperature change as a unit rate

To do this you will need to represent the temperature change per hour

7 f / 3.5 hours

= 7 f / 3.5 = 2 therefore the temperature change as a unit rate = 2f / hour

b) Temperature change after 5 hours

Δ temperature in 5 hours = temperature change per hour * 5

= 2 F * 5 = 10 F

Answer 2

See below

Explanation:

Part A

The rate of decrease:

• 7° F° in 3 hours ⇒ 7/3° F/h ≈ 2° F/h

Part B

Change after 5 hours:

• 5*2° F = 10° F decrease