Question

Se f(x) = 5x+7 , g (x) = 5-3x e h(x) = 7x , caucule o valor de :
f(g(3))) =

Answer 1

g(x) = 5-3x
g(3) = 5 - 3 *(3)
g(3) = 5 - 9
g(3) = -4

f(x) = 5x+7
f(-4) = 5 * (-4) + 7
f(-4) = -20 +7
f(-4) = -13

Entao f(g(3) = -13