The linear function y=-0.52x+24.7 models the percentage of U.S. adults who smoked cigarettes x years after 1997.

Question

The linear function y=-0.52x+24.7 models the percentage of U.S. adults who smoked cigarettes x years after 1997. NOTE-In this question, a value of y=6.9 would mean 6.9% or 6.9percent. And a value of x=3 would mean the year 2000. According to the model, what percentage of U.S. adults smoked in 2017?

Answer 1

x = 20 therefore y = -0.52(20) + 24.7 = 14.3 so the percentage of US adults that smokes in 2017 was 14.3%