The answer should be 65. The number be added is doubled. +4,+8, +16, +32 So 32+33=65 65+64=129
F^-1(x) is the inverse so...
f^-1(x) = (-1/5)x - 11/5
Cross-multiply:
7 * 3 = 5 * x
Divide each side by 5 :
X = 7 * 3 / 5 = 4.2
First of all you are going to want to google the way to solve that area of a triangle. Solve the triangles area. then find the area of the rectangle and add all of your answers to get the over all area.
