Question

The area of a rectangular room is 750 square feet. The width of the room is 5 feet less than the length of the room.Which equations can be used to solve for y, the length of the room?

Answer 1

The formula for the area of any rectangle is:

Area=Length x Width
750=y ( y-5)
750=y square-5y
Rotate this equation.
y square-5y=750
y square-5y=750

Let's factorize:
y( y-5 )=750

Two potentially true values of y can be y=750 or y=750-5=745

y=745 ft. Answer.