Catherine paid $144.97 for an mp3 player. if the price paid includes a 9% sales tax, which of the following equations can be used to determine the price of the mp3 player before tax?

What is the measure of angle x? answer

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?

The percent of change from 12 to 15