Question

The temperature was -10 degrees Fahrenheit. Then it increased 2.5 degrees every hour for 5 hours. What was the temperature after 5 hours?

Answer 1

The temperature after 5 hours is;

`2.5^0F`

Step-by-step explanation:

Given that;

The temperature was -10 degrees Fahrenheit.

`-10^0F`

Then it increase at a rate of 2.5 degrees every hour for 5 hours;

`\begin{gathered} \text{rate r= 2.5}^0F\text{ per hour} \\ \text{time t= 5 hours} \end{gathered}`

The amount of increase is the product of rate and time.

`r* t=2.5^0F*5=12.5^0F`

Then the final temperature after 5 hours is;

`\begin{gathered} -10^0F+12.5^0F \\ =2.5^0F \end{gathered}`

Therefore, the temperature after 5 hours is;

`2.5^0F`