Stefanie is painting her bedroom. she can paint 12 1/3 square feet in 2/5 of an hour. how many square feet can she paint in one hour?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

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?