Minimum Cost:

A rectangular area is to be fenced in. The enclosed area is to be 1000 square feet. Fencing for two parallel sides is $5 per linear foot, and fencing for the other two sides is $8 per linear foot; the four corner posts are $25 apiece. Let x be the length of one of the sides that costs $5 per foot.
(a) Write a function C(x) that describes the cost of the project.
(b) Will it be cheaper if the sides (x) are 20 feet long or if they are 200 feet long?

Question

Minimum Cost:

A rectangular area is to be fenced in. The enclosed area is to be 1000 square feet. Fencing for two parallel sides is $5 per linear foot, and fencing for the other two sides is $8 per linear foot; the four corner posts are $25 apiece. Let x be the length of one of the sides that costs $5 per foot.
(a) Write a function C(x) that describes the cost of the project.
(b) Will it be cheaper if the sides (x) are 20 feet long or if they are 200 feet long?