Answer: Mary needs to pay $99.36 after using the discount coupon.
Step-by-step explanation:
Find 8% of the total items price and subtracted it from the original price to find the amount she needs to pay after the discount.
8% of 108 = 8.64
108 - 8.64 = 99.36
So $99.36 will be left to pay after using the coupon.