Solve the problem. See ExampleEXAMPLE Solving a Problem Involving SubtractionThe record-hi...
Solve the problem. See Example
EXAMPLE Solving a Problem Involving Subtraction
The record-high temperature in the United States is 134°F, recorded at Death Valley, California, in 1913. The record low is −80°F, at Prospect Creek, Alaska, in 1971. See FIGURE. What is the difference between these highest and lowest temperatures? (Source: National Climatic Data Center.)
FIGURE
We must subtract the lowest temperature from the highest temperature.
The difference between the two temperatures is 214°F.
The surface, or rim, of a canyon is at altitude 0. On a hike down into the canyon, a party of hikers stops for a rest at 130 m below the surface. The hikers then descend another 54 m. Write the new altitude as a signed number.
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