Question

Given the function f(x) = 4(x+3) − 5, solve for the inverse function when x = 3?
a. -21
b. -16
c. -10
d. -1
Please explain simply

Answer 1

there's a neat property of inverse functions where the coordinates swap. Like (x,y) in the original function will be (y, x) in the inverse function. So if (1, 2) is a point on a function, then (2, 1) is a point on its inverse.

So all you have to do is plug in 3 for f(x) and solve for x.

3 = 4(x + 3) - 5

Answer 2

thanks

Answer 3

so D.? @peachpi

Answer 4

yep

Answer 5

ok tnx