To keep a heavy box sliding across a carpeted floor at constant speed, a person must exert a force on the box. This force is used primarily to overcome which of the following forces? A. Air resistance.
B. The weight of the box.
C. The frictional force exerted by the floor on the box.
D. The gravitational force exerted by the Earth on the box.

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.