Solve the Problem $\left( 17 x ^ { 2 } + 11 x \right)$

Multiple Choice

Solve the problem.
-Find the area of a triangle with a base of 7x inches and a height of (10x + 4) inches.

A) $\left( 17 x ^ { 2 } + 11 x \right)$ sq. in.
B) $\left( 35 x ^ { 2 } + 14 x \right)$ sq. in.
C) $\left( 70 x ^ { 2 } + 28 x \right)$ sq. in.
D) $( 35 x + 14 )$ sq. in.