Question

Given the function f(x) = 4(x+3) − 5, solve for the inverse function when x = 3.

−21
−16
−10
−1

Answer 1

Hello,

f(x)=4(x+3)-5=4x+12-5=4x+7

y=4x+7==>c=(y-7)/4

f^(-1)(x)=(x-7)/4
f^(-1)( 3)=(3-7)/4=-4/4=-1

Answer D