Question

Select the rule for the nth term of this arithmetic sequence.

4.3, 7, 9.7, 12.4, 15.1,...

Answer 1

@Loser66 Can you help?

Answer 2

answer me 7-4.3 =?

Answer 3

2.7

Answer 4

9.7-7=

Answer 5

2.7

Answer 6

one more time, 12.4 -9.7=?

Answer 7

Lol. 2.7

Answer 8

yeah that means the second term = the first term + 2.7, right?
the third term = the second term + 2.7, right?
the fourth term = the third term + 2.7 again, right?
so on and so on. So the rule is
\[A_n=A_{n-1}+2.7\]. do you want that rule or need another form? we can construct another form, but I don't know what you really want

Answer 9

Oooooh. Well I need to find a term. Here are my choices:
4.3n + 2.7(n-1)

1.6 + 2.7n

4.3 + 2.7(n - 1)

4.3 + 2.7n

Answer 10

oh, I see. want to construct by yourself with my guide or just answer?

Answer 11

Well I definitely want to learn how to do this, so I'd like to attempt it

Answer 12

With a nudge in the right direction lol

Answer 13

ok, let n is the order of the term, so n =1 is the first term, right?
n=1, A_1 = 4.3, got it?

Answer 14

Ok. So 4.3 would really be the second term?