SAT | h8pnnyz | Question Finding x in Exponential Function

Exam

Digital SAT

Section

Difficulty

Digital SAT Mathematics - No Calculator Section

Finding x in Exponential Function

Hard Passport To Advanced Math Exponential Functions

Consider the exponential function defined as $$ f(x) = 3^{x-2} $$.

If $$ f(x) = 81 $$, what is the value of $$ x $$?

A

$$ 6 $$

B

$$ 5 $$

C

$$ 4 $$

D

$$ 3 $$

Hint

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