math
posted by stacy .
In a movie theater, theater A has 30 seats in the first row. Each next row has 4 more seats in it than in the previous row has.
1) How many seats are in the 4th row?Explain.
2) Is there a row with exactly 60 seats in it? Explain.
3) Theater B has 40 seats in the first row and each row has 4 more seats than the previous row. If both Theater A and Theater B has 25 rows, how many more seats does Theater B have in it than Theater A? Explain.

1. 30 + 4(n1) = 30 + 4(3) = ?
Use this process with the other two problems.