A wall is to be constructed around a rectangle of 240 square yards with a fence running the length. The construction cost for the fence is $5 per yard and for the wall $8 per yard.
a.) Determine the model cost of the total project as a function of the length x of the fence.

Question

A wall is to be constructed around a rectangle of 240 square yards with a fence running the length. The construction cost for the fence is $5 per yard and for the wall $8 per yard.
a.) Determine the model cost of the total project as a function of the length x of the fence.

anonymous · Answer

Also need help with part b: what is the domain of the function? which leads to a less expensive construction cost, a length 10 yards or 12 yards?