Pls help extra points

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

This question awards 100 ! i really don’t want to fail i will also mark you !

Which is f(5) for the function –2x2 + 2x - 3?