SOLUTION: A school principal wants to install a wooden floor in a rectangular recreation room whose perimeter is 80 feet. When she talked to the laborer, she was told that the cost to instal

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Question 1165919: A school principal wants to install a wooden floor in a rectangular recreation room whose perimeter is 80 feet. When she talked to the laborer, she was told that the cost to install the floor is 800.00 pesos per square feet.
a. Write a function that defines the area of the room as a function to its length.
b. Write a function for the cost to install the floor as a function of its area.
It’s about operation of function. Please help me. Thank you.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!

x, length
y, width
2x%2B2y=80
x%2By=40
y=40-x
A the function for area: A=x%2830-x%29

C for cost function: C=800x%2840-x%29