Can someone please help me with this problem? I will Fan and Medal.

Problem:
What is the ninth term of the arithmetic sequence defined by the rule below?
A(n)=-14+(n-1)(2)

A) 232
B) 230
C) 2
D) 4
and please explain how you got it.
Thanks!

Question

Can someone please help me with this problem?  I will Fan and Medal.

Problem:
What is the ninth term of the arithmetic sequence defined by the rule below?
A(n)=-14+(n-1)(2)

A) 232
B) 230
C) 2
D) 4
and please explain how you got it.
Thanks!

shinalcantara · Answer

A(n) = -14 + (n-1)(2)
since you are to find the ninth term, all you have to do is substitute n with 9 
A(9) = -14 + (9-1)(2)
now you try to simplify that

shiree19 · Answer

ok.  just a min.

shiree19 · Answer

Do I need to simplify the right side first?

shiree19 · Answer

if so it would be $$A(9) = 2$$

shinalcantara · Answer

simplify first the one on the parenthesis (9-1) then multiply it with 2 then add -14

shinalcantara · Answer

yep

shiree19 · Answer

okay.  but then what do I do?

shinalcantara · Answer

PEMDAS

shinalcantara · Answer

that's the answer. the ninth term is 2

shiree19 · Answer

oh ok.  (I'm an idiot)  Thank you.  Will fan and medal.

shinalcantara · Answer

yw :) and no you're not an idiot

shiree19 · Answer

Thanks.  :)