Find the slope then describe what it means in terms of the rate of change of the dependent variable per unit change in the independent variable.The linear function f(x) = -8.8x + 32 models the percentage of people, f(x), who eat at fast food restaurants each week x years after 1998.
A. m = 8.8; the percentage of people eating at fast food restaurants each week has increased at a rate of -8.8% per year after 1998.
B. m = 32; the percentage of people eating at fast food restaurants each week has increased at a rate of -8.8% per year after 1998.
C. m = -8.8; the percentage of people eating at fast food restaurants each week has decreased at a rate of -8.8% per year after 1998.
D. m = 8.8; the percentage of people eating at fast food restaurants each week has increased at a rate of 8.8% per year after 1998.
Answer: C
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