Question

qual o valor de x tal que f (x) = 150, sendo a função f(x)= -8 -4x ?

Answer 1

-8-4x=150
-4x=158!
x=158/-4
x=-39,5

Answer 2

f(x) = 150
f(x) = -8 - 4x

-8 - 4x = 150
-4x = 150 + 8
-4x = 158
x = 158/(-4)
x = -79/2