Question

@TheSmartOne
The first five terms of a sequence are shown below:

6, 9, 12, 15, 18

If the nth term of this sequence is represented by f(n), which of the following functions best represents this sequence?

f(n) = 6n - 3; n ≥ 1
f(n) = 6n + 3; n ≥ 1
f(n) = 3n + 3; n ≥ 1
f(n) = 3n - 3; n ≥ 1

Answer 1

b?

Answer 2

Nope

Answer 3

What's the difference between each term?

Answer 4

@Supermariofan153 Please no direct answers. Its against the CoC
http://openstudy.com/code-of-conduct

Answer 5

each is 3 more than each other

Answer 6

ok

Answer 7

@DDCamp

Answer 8

The difference between each term will be what you multiply n by. (So if n goes up by one, the term goes up by 3).

Does that make sense?

Answer 9

yes @DDCamp

Answer 10

Since 6 is the first number then when n=1 then f(n)=6

Answer 11

So when n=1, f(n) = 6
n=2, f(n)= 9
and so on

Answer 12

So basically plug in those numbers and you got it :)

Answer 13

ok so basically c @TheSmartOne

Answer 14

Yup :D

Answer 15

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Answer 16

thank you @TheSmartOne

Answer 17

Np :)

Answer 18

A sequence has its first term equal to 3, and each term of the sequence is obtained by adding 5 to the previous term. If f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence?

f(1) = 3 and f(n) = f(n - 1) + 5; n > 1
f(1) = 5 and f(n) = f(n - 1) + 3; n > 1
f(1) = 3 and f(n) = f(n - 1) + 5n; n > 1
f(1) = 5 and f(n) = f(n - 1) + 3n; n > 1

Answer 19

@TheSmartOne c o. d