The Region $\left\{(x+y) \mid x \geq-7,0 \leq y \leq e^{-x / 5}\right\}$

Multiple Choice

The region $\left\{(x+y) \mid x \geq-7,0 \leq y \leq e^{-x / 5}\right\}$ is represented below. Find the area of this region to two decimal places.

A) 20.28
B) $17.89$
C) $16.08$
D) $15.89$
E) $15.87$