Dillon pays x dollars to get a haircut. He gives the stylist a 25% tip. The expression representing his total cost is
x + 0.25x

Which expression is equivalent and why?

A. 1.025x because adding 25% to the cost of the haircut is the same
as multiplying the cost by 1.025.

B. 1.25x because adding 25% to the cost of the haircut is the same
as multiplying the cost by 1.25.

C. 1.25x because adding $25 to the haircut is the same as
multiplying the cost by 1.25.

D. x(0.25) because the cost of the haircut can be factored out.