Lesson 2 Quiz please help ❗️

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

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?

What are the solutions of the following system? y=-2x^2 y=x-2