I'm stuck! please help!
Find the Area- *please explain why :)*

Answer:
C 139.5
Step-by-step explanation:
Frist the rectangle
12 x 9 = 108
the area of a tringle =
A = base x hight/2
A = 9 x 7/2
A = 63/2
A = 31.5
31.5 + 108
139.5