Use Properties of Logarithms to Evaluate the Expression $f ( x ) = 5 ^ { x }$

Multiple Choice

Use properties of logarithms to evaluate the expression.
-If $f ( x ) = 5 ^ { x }$ , find $f \left( \log _ { 5 } 7 \right)$

A) 7
B) $\log _ { 7 } x$
C) 5
D) 35