What is the mean absoluta devition of this data

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?