cost ...
C = 100 + 5x + 5x + 10h = 10x + 10h = 10(x+h)
xh = 2500
solve for h in the second equation, substitute the result in for h in the second equation to get the cost as a function of x
I have an area A = 2500ft^{2 }of a rectangular fence
the area is found base * height
the base is X and height is H
Each fence post is $25; meaning $100 for all 4 of them
Only 3 of the sides are being fenced, X X and H
it costs $5 per ft on sides of X and $10 on H
C = cost
I am lost as to how to make a formula to tie all this information together. To make a formula in terms of C(x)=
H is something i made up to hold the place of Height the rest are given.