Simplify and show work pleaseee

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

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?

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?