7. Use the following figure to answer questions a-d.
a. Find the perimeter of the figure if the following is true:
a = x + 7
b = 2x + 2
C = 8x
d = x + 10

b. What is the perimeter of the figure in part
(a) if x = 4

c. What is the perimeter of the figure in part (b)
if x = 2 ?

d. Find the perimeter of the figure if the following
is true:
a = x2
b = 4x + 8
c = 2x²
d = x