Exam

Digital SAT

Section

Difficulty

Digital SAT Mathematics - No Calculator Section

Solve for x in Exponential Function

Very Hard Passport To Advanced Math Exponential Functions

Consider the exponential function defined by the equation:

$$ f(x) = 2^{x-3} + 5 $$

What is the value of $$ x $$ for which $$ f(x) = 13 $$?

A

$$ 7 $$

B

$$ 8 $$

C

$$ 6 $$

D

$$ 5 $$

Hint

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