Answer
Three times.
Work Step by Step
We need to solve the equation
$2^{x+2}=32$.
Rewriting $32$ as $2^{5}$, we obtain
$2^{x+2}=2^{5}$.
Equating the exponents, we have
$x+2=5$
$\implies x=5-2=3$.
The photo must be enlarged three times.