Acompany makes concrete bricks that are shaped like rectangular prisms. each brick is 9 inches long, 5 inches wide, and 2 inches tall. how much concrete will they need to make 1800 bricks.

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$