What is the largest rectangular area one can enclose with 38 inches of string?

Question 5 spring semester final exam math evaluate

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?

Write the equation in general quadratic form: plz !