Help Please!!
Molly earns a rebate each month on her movie tickets and books. She earns $0.25 for each movie ticket and $2 for each book. Last month Molly purchased 4 movie tickets and earned $17.
Part A: Create an equation that will determine the number of books she purchased.
Part B: Solve this equation justifying each step with an algebraic property of equality.
Part C: How many books did Molly purchase last month?
Please answer asap