Another one another one.

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?

What is the first step of an indirect proof of a number that is divisible by two

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?