Which one of the following is correct for all non-zero values of x and y?

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 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2

Find two numbers if their ratio is 4: 7 and their difference is 123.