Solve the Problem $f ( x ) = 2 ^ { x }$

Multiple Choice

Solve the problem.
-Suppose that $f ( x ) = 2 ^ { x }$ . What is $f ( 3 )$ ? What point is on the graph of $f$ ?

A) 9 ; $( 2,9 )$
B) $8 ; ( 3,2 )$
C) $9 ; ( 3,9 )$
D) $8 ; ( 3,8 )$