Mr. smith has a square sheet of glass in his garage. he plans to cut 3 inches off of the sheet along the width to use it for a window. the new area of the glass is given by the expression below, where x is the side length, in inches, of the original sheet of glass.

x^2-3x

which statement best describes the term 3x?

a.
the area of the sheet of glass after being cut
b.
the width of the sheet of glass after being cut
c.
the area of the sheet of glass before being cut
d.
the area removed from the sheet of glass after being cut