Q19. - Algebra 1

Question

The outside temperature was –4°F in the morning and 13°F in the afternoon. By how much did the temperature increase?

Step-by-Step Solution

Answer

The temperature increased by 17°F.

Step 1. Understand what is given.

Morning temperature = – 4°

Afternoon temperature = 13°F

Step 2. Determine what to find.

We have to find by how much did the temperature increase. That means we need the difference of the temperatures.

Step 3. Calculation.

   $$\begin{gathered} =(13-(-4\left)\right)°\mathrm{F} \\ =(13+4)°\mathrm{F} [\mathrm{Two} \mathrm{negatives} \mathrm{make} \mathrm{positive}] \\ =17 °\mathrm{F} \end{gathered}$$