Answer:
$3.20
Explanation:
First, find the area in square feet of his room:
Use the area formula, A = lw, where l is length and w is width:
A = lw
A = 14(11.5)
A = 161
So, his room is 161 square feet.
To find the cost per square foot, divide 515.20 by 161:
515.20/161
= 3.2
So, the cost per square foot was $3.20