Question

Given the function f(x) = 3x, find the value of f−1(81).

f−1(81) = 1

f−1(81) = 2

f−1(81) = 3

f−1(81) = 4

Answer 1

-1 is to the power of f

Answer 2

I believe that is the inverse function

Answer 3

i think the question has
\(\huge 3^x\)

Answer 4

because
\(3^x =81\)
will give you one of the required choices, not 3x =81

Answer 5

yes it does @hartnn

Answer 6

ah, good
find x from
\(3^x =81\)
can u ?

Answer 7

yeah

Answer 8

oh i just figured it out thank you

Answer 9

oh, welcome ^_^