3(y - 10) + 1 = x(y - 8)

pls help asap

Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2

Having a hard time understanding this question (see attachment).

50 points~ ! i have to turn this in tomarrow