Kiera is cleaning her neighbors garage. she is being paid a $25 flat fee and $8 per hour for each hour that she works. kiera makes a total of $81. how many hours did she work?

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? $$