Abc daycare wants to build a fence to enclose a rectangular playground. the area of the playground is 910 square feet. the fence along three of the sides costs $5 per foot and the fence along the fourth side, which will be made of brick, costs $15 per foot. find the length of the brick fence that will minimize the cost of enclosing the playground. (round your answer to one decimal place.)

Given that the area of the playground is 910 square feet, let the length of the playground be x, then the width of the playground is given by

Given that the fence along three of the sides costs $5 per foot and the fence along the fourth side, which will be made of brick, costs $15 per foot. Let the side with the brick fence be the side which measures x feet.

Then the cost for fencing the entire playground is given by



For, minimum cost,



But x can't be negative.

Therefore, the length of the brick fence that will minimize the cost of enclosing the playground is 21.33 feet.

What is the rest of the question?