X+y=5,x^x+y^y=31. find x and y

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid