Question

Sabendo que f(g(x))=15x-5 e g(x)=5x-2, calcule f(x)

Answer 1

15(g(x))-5
15(5x-2)-5 = 0
(15*5x)-(15*2)-5 = 0
75x - 30 - 5 = 0
75x - 35 = 0
75x = +35
f(x) = $\frac{35}{75} = 0,4666...$