How do you do this kind of math question and how to solve it?

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?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Complete the input-output table for the linear function y = 3x. complete the input-output table for the linear function y = 3x. a = b = c =