The graphs show four exponential functions, each with equation y= ab. If a > 1 and b > 1, then which of the four could be its graph?

Marshall went to the state fair and bought 3 tickets. each ticket to the fair cost x dollars. after he bought the tickets, he had $3.25 left in change. write an expression that represents the amount of money, in dollars, that marshall had before he bought the tickets. n