Its a test and im confused

Increase in amount: $1247

Year-end amount: $7047

Step-by-step explanation:

Multiply 5800 by the decimal form of 21.8% (it's 0.215.) That gives us 1247, which is the number by which it increased. Add $1247 to $5800 to get the year end amount.

i believe it's a.

i'm not sure on this one, most likely correct.

22, 28, 34, 40, 46

b)   f(n) = 6n + 16

n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22

c)   the 14th row will have 100 seats

(1)   (2)   (3)   (4)   (5)   (6)   (7)   (8)   (9)   (10) (11) (12) (13) (14)

22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100