Creative Computing sells a tablet computer called the Protab. The $605 sales price of a Protab Package includes the following: .One Protab computer. .A 6-month limited warranty. This warranty guarantees that Creative will cover any costs that arise due to repairs or replacements associated with defective products for up to six months. A coupon to purchase a Creative Probook e-book reader for $250, a price that represents a 40% discount from the regular Probook price of $625. It is expected that 20% of the discount coupons will be utilized. A coupon to purchase a one-year extended warranty for $55. Customers can buy the extended warranty for $55 at other times as well. Creative estimates that 30% of customers will purchase an extended warranty Creative does not sell the Protab without the limited warranty, option to purchase a Probook, and the option to purchase an extended warranty, but estimates that if it did so, a Protab alone would sell for $585. Customers must pay $80 to purchase the extended warranty if they don't purchase it with the $55 coupon that was included in the Protab Package. Creative estimates that 30% of customers will use the $55 coupon to purchase an extended warranty