Solve. See Example 8.EXAMPLE 8Calculating TemperatureIn Philadelphia, Pennsylvania, the re...

Solve. See Example 8.

EXAMPLE 8

Calculating Temperature

In Philadelphia, Pennsylvania, the record extreme high temperature is 104°F. Decrease this temperature by 111 degrees, and the result is the record extreme low temperature. Find this temperature. (Source: National Climatic Data Center)

Solution:

The record extreme low temperature in Philadelphia, Pennsylvania, is − 7°F.

On January 2, 1943, the temperature was − 4° at 7:30 a.m. in Spearfish, South Dakota. Incredibly, it got 49° warmer in the next 2 minutes. To what temperature did it rise by 7:32?