A customer repays a loan monthly by increasing the payment each month by $x. If the customer repaid $50 in the 5th month and $70 in the 9th month, calculate the total amount of money repaid at the end of the 24th month.

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.