What is the solution of system of equations y=2x - 3.5 and x - 2y=-14

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

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?

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction