Okay the problem that I have is as follows: you have a 10 by 15 ft pool that you just installed and $3000 left to create a Patio around it.

The options for Patio material are:
Cement ($5per sqft)
Brick ($7.50per sqft + a one time $30 delivery fee)
Outdoor carpeting ($4.50 per sqft + $10.86 per foot of perimeter)
Cement Equation (20x^2+ 250x +3000)
Brick Equation (30x^2+ 375x +30+3000)
Carpeting Equation(18x^2+ 225x +543+3000)

As you can see, I have the start of equations for all three but I'm not sure what to do from here. Thank you so much for helping!

Question

Okay the problem that I have is as follows: you have a 10 by 15 ft pool that you just installed and $3000 left to create a Patio around it.

The options for Patio material are:
Cement ($5per sqft)
Brick ($7.50per sqft + a one time $30 delivery fee)
Outdoor carpeting ($4.50 per sqft + $10.86 per foot of perimeter)
Cement Equation (20x^2+ 250x +3000)
Brick Equation (30x^2+ 375x +30+3000)
Carpeting Equation(18x^2+ 225x +543+3000)

As you can see, I have the start of equations for all three but I'm not sure what to do from here. Thank you so much for helping!