Solve the problem.The linear function f(x) = 3.1x + 33 models the percentage of people, f(x), who graduated from college x years after 1998. Find and interpret the slope.

A. m = 3.1; the percentage of people graduating from college has decreased at a rate of 3.1% per year since 1998.
B. m = 33; the percentage of people graduating from college has increased at a rate of 33% per year since 1998.
C. m = -3.1; the percentage of people graduating from college has decreased at a rate of 3.1% per year since 1998.
D. m = 3.1; the percentage of people graduating from college has increased at a rate of 3.1% per year since 1998.


Answer: D

Mathematics

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