The expression 0.09x+(x−30) models the final price of a bicycle with an instant rebate in a state that charges a sales tax. The tax is on the original price. Which expression represents the amount of tax that is paid on the bicycle?
Actually I took the test and it was B. 0.09x. Btw the answer can't be 0.09x - 30 because we aren't finding what it equals we are finding "which expression represents the amount of tax that is paid on the bicycle".
