Final answer:
To determine the price of the CamelBak with the extra coupon, we need to subtract the coupon value from the original price. Unfortunately, the value of the coupon is not provided in the question, so we cannot determine the final price.
Step-by-step explanation:
To find out how much you would pay for the CamelBak using the extra coupon, we need to subtract the value of the coupon from the original price. The original price of the CamelBak is given as $56.75 and the total value of the coupon is not provided. Without knowing the exact value of the coupon, we cannot determine the final price of the CamelBak. Therefore, we cannot select any of the given options (a, b, c, or d) as the correct answer.