Answer :
a) Decrease in temperature, △T = 7°F
Decrease in time, △t = 3 hours
The rate of change of temperature will be △T / △t
Therefore:
[tex]\begin{gathered} \frac{\triangle T}{\triangle t}=\text{ 7 / 3} \\ \frac{△T}{△t}=\text{ }2.33 \end{gathered}[/tex]Rate of change of temperature, △T / △t = 2.33 °F/hour
b) The outside temperature decreases by 7°F in 35 hours
Decrease in temperature in 1 hour = 7 / 35 = 0.2 °F
Change in temperature in 5 hours = 0.2 x 5
Change in