Solve and answer in simplified form(-8.3x+4) - (3.2x-5)

Is the figure congruent? yes or no?

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 is the area of the shaded sector?