A small cinema has 25 rows of seats. The first row has 18 seats. Each row has two more seats than the previous row. a. Find the number of seats in the 10th row. b. Find the total number of seats in the cinema.
Answer: the number of seats in the 10th row is 36 seats and the number of total seats in cinema is 66 seats because there is 25 rows and the first row started out at 18 seats
