Answer:
a
Step-by-step explanation:
That would be 8. first parenthesis, then multiply, then subtract.
Basically, this problem is going to require you to solve for the area and multiply it with the given cost unit.
Area = Length*Height
Area = 100 ft * 8 ft = 800 ft²
Total Cost = (Unit Cost)(Area)
Total Cost = ($2/ft²)(800 ft²)
<em>Total Cost = $1,600</em>
$.75 bc 15 x 4 is 75 so that would make 75¢ or $.75