After purchasing fence for a 9 by 9 feet square pen for his dog, Craig decided to enlarge the size of the pen to make each side 4 feet longer. The price of the fence is $8.50 per foot
a. How many feet of additional fence should Craig purchase to build his enlarged fence?
b. On the axes below:
i. Construct a graph to represent the perimeter of the fence, P, in terms of the fence's side length, s.
i. Plot the point on the graph you constructed above that represents the side-length and perimeter of the 9 by 9 dog pen that Craig originally planned to build.
iii. Represent the increase of 4 feet in the fence's side length from a side-length of 9 feet and represent the corresponding change in the perimeter.
c. Craig's neighbor see's Craig's new fence and decides that he too needs a new pen for his dog. He has 72 feet of fencing. What is the side length, s, of the fence that Craig's neighbor can build? s = ________
d. Solve the equation 82 = 4s, s = _______ feet
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