Question

At a car wash, Lily paid $11.75 for the wash, 8% sales tax on the price of the wash, and $2 for the tip.

Which statements are true?

Choose exactly two answers that are correct.

A.
The equation that represents the total price, w, of the car wash is w + 0.08w + 2 = 11.75.

B.
The equation that represents the total price, w, of the car wash is 11.75 + 0.08(11.75) + 2 = w.

C.
The total cost of the car wash is $9.03.

D.
The total cost of the car wash is $14.69.

Answer 1

You have to sum up three concepts, the cost before sales tax, the sales tax and the tip. The price before sales tax $11.75; the sales tax is the price times 8%, which $11.75 *8% = $11.75*8/100 = $11.75*0.08 = 0.94; and the itp is $2. Then, the equation is w = 11.75 + (0.08)(11.75) + 2, and the result is 14.69. So, the true statements are B and D.