Final answer:
(a) The product represents the new position of Kevin's feet on the steps. (b) To calculate the product, we need to know the initial position of Kevin's feet and the distance he has moved.
Step-by-step explanation:
(a) The product represents the new position of Kevin's feet on the steps. Since the steps are represented as positive and negative values depending on their position relative to the water level, the product tells us how much Kevin has moved up or down the steps.
(b) To calculate the product, we need to know the initial position of Kevin's feet and the distance he has moved. Let's assume Kevin's initial position is -8 inches, since the step he was on was even with the water level. If Kevin moves up 4 steps, which is 32 inches, his new position would be -8 + 32 = 24 inches. Therefore, the product is 24 inches.