Question

the slope of the line of best fit is - 2.5 therms per degree. which explains how the slope can be interpreted? a for each decrease of 10 degrees, the amount of gas used is about 25 therms less. b for each increase of 10 degrees, the amount of gas used is about 25 therms less. c for each decrease of 10 therms of gas used, the temperature is about 25 degrees less. d for each increase of 10 therms of gas used, the temperature is about 25 degrees less.

Explanation:

Step1: Recall slope concept

The slope is - 2.5 therms per degree.

Step2: Calculate for 10 - degree change

For a 10 - degree change, we multiply by 10. So, $-2.5\times10=- 25$. This means for each increase of 10 degrees, the gas used is about 25 therms less.

Answer:

C. For each increase of 10 degrees, the amount of gas used is about 25 therms less.