A town of 8000 grows 3% yearly how long will it take to reach 16300

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?

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

I'm stumped by this question. someone with my math homework