Which expression can be used to determine the nth term in the pattern
-4 -22 -52 -94 -198
A. -6n^2+2
B.-6n+2
C.6n^2-2
D. -4n-6

Question

Which expression can be used to determine the nth term in the pattern 
-4 -22 -52 -94 -198
A. -6n^2+2
B.-6n+2
C.6n^2-2
D. -4n-6

anonymous · Answer

n is just the number of the term you are trying to solve. (-4 = 1st term, -22 = second term, -52 = third term, and so on)

anonymous · Answer

if you plug in n = 1 to your first equation, like so:

-6(1)^2 + 2

you get -4 as your first term in the pattern. If you plug in n = 2:

-6(2)^2 + 2

you get -22.

anonymous · Answer

You can check each equation using the same method, but the answer is A

mathmale · Answer

So, try finding the 3rd term, using the same expression.

anonymous · Answer

Exactly.

-6(3)^2 + 2 = -52

anonymous · Answer

Thank you

anonymous · Answer

No Problem :)

mathmale · Answer

@Rodr1697 :  Good explanation.  However, it'd be much better to let your student verify the rest.  Please do NOT hand out answers.  Thank you.

anonymous · Answer

@mathmale: You're right. Sorry about that.