Functions and models of cost

Reference no: EM13118756

A wall is to be constructed around 3 sides of a rectangle of area 220 square yards, with a fence running the length of one side. The construction cost for the wall is $15 per linear yard, and $9 per linear yard for the fence.

(a) Express the width, w of the rectangle as a function of the length, x, of the fence.

w(x)=

b) Determine a model for the cost, C, of the total project as a function of the length, x, of the fence.

c(x)=

Reference no: EM13118756

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