The science club is comparing options for purchasing new T-shirts. One company charges a $100 base fee plus an additional $3.50 per shirt. A second company charges a $120 base fee but only an additional $2.50 per shirt. The given expression represents the difference of the two companies' average cost per shirt.
$\frac{3.5x+100}{x}-\frac{2.5x+120}{x}$
Which expression is equivalent to the expression representing this situation?
A$x-120$
B$6x+220$
C$\frac{x+220}{x}$
D$\frac{x-20}{x}$
$\frac{3.5x+100}{x}-\frac{2.5x+120}{x}$
Which expression is equivalent to the expression representing this situation?
A$x-120$
B$6x+220$
C$\frac{x+220}{x}$
D$\frac{x-20}{x}$