The function a(b) relates the area of a trapezoid with a given height of 12 and one base length of 9 with the length of its other base.
It takes as input the other base value, and returns as output the area of the
trapezoid.
alb) = 12.
+9
2
Which equation below represents the inverse function b(a), which takes the
trapezoid's area as input and returns as output the length of the other base?
A. b(a) - 5 - 6
B. b(a) + 6
C. b(a) +9