Stacy wants to build a patio with a small, circular pond in her backyard. the pond will have a 6-foot radius. she also wants to install tiles in the remaining area of the patio. the length of the patio is 13 feet longer than the width. if the cost of installing tiles is $1 per square foot, and the cost of installing the pond is $0.62 per square foot, then which of the following inequalities can be used to solve for the width, x, of the patio, if stacy can spend no more than $536 on this project? a.) $1x^2 + $13x - $13.68 $536 b.) $0.62x^2 + $8.06x - $13.68 $536 c.) $1x^2 + $13x - $58.32 $536 d.) x^2 + $13x - $13.68 $536