Answer:
-6x+11
Step-by-step explanation:
Since they have the same base we can just add all the exponents
-3+ 10= 7
keep the base so the answer is
12^7
He can make a 70 or higher to keep a B avg.
I guess you are asking what is the shape of the cross section.
It will be an ellipse.
Volume = 12 * area of triangular base
area of triangle = 1/2 base * height = 3 * height
height = sqrt(5^2 - 3^2) = 4
area of triangle = 4*3 = 12
Vol of prism = 12*12 = 144 cubic units