In an auditorium, there are 21 seats in the first row and 29 seats in the second row. the number of seats in a row continues to increase by 8 with each additional row.
(a) how many seats are in the 3rd,4th, and 5th rows.
(b) is this an arithmetic or geometric sequence?
(c) how would you find the 100th row?

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.