Can u answer this. This ain’t 20 characters long, why.

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Three times the sum of a number and seven is negative thirty-six. what is the number?

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? $$