Solve the Problem $f ( x ) = 1.7 x + 27$

Solve the problem.
-The linear function $f ( x ) = 1.7 x + 27$ models the percentage of people, $f ( x )$ , who graduated from college $x$ years after 1998 . Find and interpret the slope.

A) $\mathrm { m } = 1.7$ ; the percentage of people graduating from college has increased at a rate of $1.7 \%$ per year since 1998 .
B) $\mathrm { m } = - 1.7$ ; the percentage of people graduating from college has decreased at a rate of $1.7 \%$ per year since 1998 .
C) $\mathrm { m } = 1.7$ ; the percentage of people graduating from college has decreased at a rate of $1.7 \%$ per year since 1998 .
D) $\mathrm { m } = 27$ ; the percentage of people graduating from college has increased at a rate of $27 \%$ per year since 1998 .