The time, t, in hours, that it takes x people to plant n trees varies directly with the number of trees, and inversely with the number of people. suppose 6 people can plant 12 trees in 3 hours. how many people are needed to plant 28 trees in 5 hours and 15 minutes?

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.