Determine a Formula for the Exponential Function $f ( x ) = 36 \cdot 2 ^ { x }$

Multiple Choice

Determine a formula for the exponential function.
-

A) $f ( x ) = 36 \cdot 2 ^ { x }$
B) $f ( x ) = 9 \cdot 2 ^ { x - 2 }$
C) $f ( x ) = 9 \cdot \left( \frac { 1 } { 2 } \right) ^ { x }$
D) $f ( x ) = 9 \cdot 2 ^ { - x } + 2$