Pls help i know this should be easy but pls help

Select the best attribute for the angle pair formed by two parallel lines intersected by a transversal.

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?

I’m stuck on this equation, anyone got the answer?