PLEASEEE HELP QUICK find the midpoint of (5,11) and (4,-2)

Find the value of x. round the length to the nearest tenth

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

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? $$