If i stands for income and e stands for expenses, what is the formula for p, profits?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

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.