## College Algebra (6th Edition)

a) Plug in 0 for x into function f. f(0) = 80$e^{-.5(0)}$+20 Simplify this equation, giving you the answer: 100. b) Plug in 1 for x into function f. f(1) = 80$e^{-.5(1)}$+20 Simplfy this equation and round your answer, giving you the answer: $\approx$68.5 c) Plug in 4 for x into function f. f(4) = 80$e^{-.5(4)}$+20 Simplify this equation and round your answer, giving you the answer: $\approx$30.8