What is the perimeter of the triangle?

7x^3+7x^2+18

Step-by-step explanation:

11x^2+8+6x^3+10-4x^2+x^3

=6x^3+x^3+11x^2-4x^2+8+10

=6x^3+x^3+7x^2+8+10

=7x^3+7x^2+8+10

=7x^3+7x^2+18

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step-by-step explanation:

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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