Chapter 0.3, Problem 19E

To determine

The increase in temperature when it was $-4°\text{F}$ in the morning and $13°\text{F}$ in the afternoon.

Answer to Problem 19E

The increase in temperature when it was $-4°\text{F}$ in the morning and $13°\text{F}$ in the afternoonis $9°\text{F}$ .

Explanation of Solution

Given information:

The temperature was $-4°\text{F}$ in the morning and $13°\text{F}$ in the afternoon.

Formula used:

Algebra rule, $a-\left(-b\right)=a+b$ , where a and b are real numbers.

Calculation:

Consider the provided situation, temperature was $-4°\text{F}$ in the morning and $13°\text{F}$ in the afternoon.

Increase in temperature is the difference between the afternoon temperature and morning temperature.

  $\begin{array}{c}13-\left(-4\right)=13+4\\ =17\end{array}$

Thus, the increase in temperature when it was $-4°\text{F}$ in the morning and $13°\text{F}$ in the afternoon is $9°\text{F}$ .