Lily and Edna just had business cards made. Lily's printing company charged a one-time setup fee of $10 and then $10 per box of cards. Edna, meanwhile, ordered hers online. They cost $8 per box. There
was no setup fee, but she had to pay $20 to have her order shipped to her house. By coincidence, Lily
and Edna ended up spending the same amount on their business cards. How many boxes of business
cards did each buy?
Write a system of equations, graph them, and type the solution.