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Algebra
Question

The scatter plot shows the average monthly tempera...

The scatter plot shows the average monthly temperature, \( x \) , and the monthly heating cost of a family, \( y \) , for \( 24 \) different months.Use the equation of the line of best fit,\( y = - 1.24 x + 96.40 , \) to answer the questions below.  Give exact answers, not rounded approximations. (a) For an increase of one degree Fahrenheit, what is the predicted decrease in the monthly heating cost? (b) What is the predicted heating cost for a month with an average temperature of \( 0 ^ { \circ } F \) ? (c) What is the predicted heating cost for a month with an average temperature of \( 35 ^ { \circ } F \) ? 

Answer

a) $1.24

b) $96.40

c) $53

Solution
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