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EIGHTSIX7
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Homework Statement
A security fence is to be built around a rectangular parking lot. The front side of the fence costs $60 per meter and the other three sides cost $30 per meter. The total cost of the fence is budgeted to be $7500.
Part a).
Express the area of the lot enclosed by the fence as a function of the length 'x' of the side that cost $60 per meter.
Homework Equations
A=length*width
The Attempt at a Solution
I have scanned and uploaded my attempt/work onto imgur. here
http://i.imgur.com/SDB9T.jpg
I have attempted the solution, where I had simplified the equation in relation to the cost I am not entirely sure if after that I had solved for the correct variable ( either y or x), and did I input the equation into the right equation (Area of rectangle as a function of length x).
Any help would be greatly appreciated. Is my attempt correct?
*****also, confused when they ask for the area of the lot as a function of the length x. So essentially I only want variable "x" in my area equation?******