Solve 4x2 + 12x – 15 = 5 by completing the square

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal

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?