Simplify.
9a +4b+4+4a +5b+7

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

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?