The jones family is going to paint the walls in their living room. The total area that will be painted is 300 square feet. they plan on applying 2 coats of paint. They plan on applying 2 coats of paint. An advertisement for the paint they like says "just 2 quarts covers 175 square feet." The regular price for paint is $10.90 for a quart, and $34.90 for a gallon. There is a coupon for 20% off all quart sized paint cans. Help the Jones family figure out the cheapest option for buying their paint.

(EXPLAIN PLEASE)