The basic equation for calculating compound intrest is a = p(1 + r/n)^(nt). if $2,200 is invested at the intrest rate of 5% per year, compound quarterly, how much will the investment be worth at the end of 8 years? show your work.

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.