Question

Sendo f(x)=8x - 2 , então f(x)=8 e igual a:

Answer 1

8=8x-2
8x=8+2
8x=10

x=10/8


confirmando a resposta:
f(x)=8x-2
f(x)= 8(10/8)-2
f(x)=80/8-2
f(x)=10-2
f(x)=8