Question

Given the function f(x) = log3(x + 4), find the value of f-1(3). (1 point)
Question 46 options:

1) f-1(3) = 7

2) f-1(3) = 12

3) f-1(3) = 23

4) f-1(3) = 31

Answer 1

you need to find the inverse function as the 1st step... so

the function can be re-written as

\[y = \log_{3}(x + 4)\]

to find the inverse swap x and y

\[x = \log_{3}(y + 4)\]

now solve for y,

this will give the inverse.