Help Please I'm Out Of Time ;( Use three different values of n to demonstrate that 2n + 3n is equivalent to 5n.

A50% increase followed by 33 1/2% decrease

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?

Simplify the following expression 48^1/2