Stupid question number 1 you play borderland Anybody? If you dont just take the points!!!

Which is the completely factored from of xy^3-x^3y

X+ y = 5 ; x - y =3 solve using linear combination

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.