Question

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

Answer 1

Will metal+fan

Answer 2

Thank you!

Answer 3

n= number of the term we have to find
so to find 9th term substitute n for 9 then solve

Answer 4

let n = 9 I got 2

Answer 5

anywys :/\[a_9=-14+(\color{ReD}{9}-1)(2)\]
remember PEMDAS rule
parentheses first
so first subtract (9-1) and then multiply by 2

Answer 6

Thanks for the help! Maybe I'll be able to get these sequence questions without help for once :P

Answer 7

np
this topic isn't that hard just practice :=))
all u need to do is remember geometric and sequence formulas that's it ! :=))
good luck!