Posted by **Amy** on Monday, October 11, 2010 at 9:04am.

A sequence of numbers is defined by the expression a(subscript n) = 3n + n^2

Which sequence corresponds to this expression?

A)4, 9, 12, 20

B)4, 10, 18, 28

C)4, 10, 15, 20

D)5, 10 ,15 20

Question:

What am I supposed to do here?

How would I solve this?

- Math -
**Reiny**, Monday, October 11, 2010 at 9:13am
replace the expression with

n = 1 , 2, 3, and 4 and see which sequence matches your results.

I will do one of them

if n = 2

a_{2} = 3(2) + 2^2 = 10

(that would be your second number)

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