Math genius looking for a challenge? Alegebra 2 Help!!!!?

Question

10. An angle has the measure xdegrees. Find the average of the measures of a complement and a supplement of the angle.

12. A Pyramid has a rectangular base. Find the volume if the length and width of the base and the height are three consecutive odd intergers and x is the largest integer. (V= 1/3Bh) (B is the area of the base)

Answer 1

10. Complement = 90 - x
Supplement = 180 -x

Average: (270 - 2x)/2 = 135 - x

12. The 3 measurements are x, x-2, and x-4.
The volume, then is (1/3)*x(x-2)(x-4) = (1/3)*x(x^2-6x+8)
= (1/3)(x^3 - 6x^2 + 8x) = x^3/3 - 2x^2 + (8/3)x