The distance a spring will stretch varies directly with how much weight is attached to the spring. if a spring stretches 5 inches with 50 pounds attached, how far will it stretch with 170 pounds attached?

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.