Find the Slope Then Describe What It Means in Terms $f ( x ) = - 8.8 x + 32$

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 $f ( x ) = - 8.8 x + 32$ models the percentage of people, $f ( x )$ , who eat at fast food restaurants each week x years after 1998 .

A) $\mathrm { m } = - 8.8$ ; the percentage of people eating at fast food restaurants each week has decreased at a rate of $- 8.8 \%$ per year after 1998 .
B) $\mathrm { m } = 8.8$ ; the percentage of people eating at fast food restaurants each week has increased at a rate of $- 8.8 \%$ per year after 1998 .
C) $\mathrm { m } = 32$ ; the percentage of people eating at fast food restaurants each week has increased at a rate of $- 8.8 \%$ per year after 1998 .
D) $\mathrm { m } = 8.8$ ; the percentage of people eating at fast food restaurants each week has increased at a rate of $8.8 \%$ per year after $1998 .$