Question

from midnight to 9:00 am, the temperature rose 1.65°c each hour. if the temperature at midnight was - 14°c, what was the temperature at 9:00 am?

Explanation:

Step1: Calculate temperature increase

The time from midnight to 9:00 am is 9 hours. The temperature rises 1.65°C per hour. So the total increase is $1.65\times9$.
$1.65\times9 = 14.85$ (°C)

Step2: Calculate final temperature

The initial temperature at midnight was - 14°C. Add the temperature increase to the initial temperature.
$-14 + 14.85$
$=0.85$ (°C)

Answer:

$0.85^{\circ}C$