In a theater there are 12 seats on the first row and 16 on the second row. The number of seats in a row continues to increase by 4 each additional row. Write an explicit rule to model the sequence formed by the number of seats in each row.

\(nseats(row) = 12 + 4(row-1)\)

would i replace row with n?

I'd replace it with r for row.

You can use any letter but I do not think that n is the best choice as it could lead to confusion,

(n for number of seats or n for number or rows ??? )

[Don't forget to thank Rom ]

I suppose though I don't see any reason to use "n".

The word row is more descriptive of what's going on.