MEDAL ALERT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The first five terms of a sequence are shown below.

4, 7, 10, 13, 16

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

f(n) = 3n - 1; n ≥ 1

f(n) = 3n + 1; n ≥ 1

f(n) = 4n - 1; n ≥ 1

f(n) = 4n + 1; n ≥ 1

Question

MEDAL ALERT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The first five terms of a sequence are shown below.

4, 7, 10, 13, 16

If the nth term of this sequence is represented by f(n), which of the following functions best represents this sequence?

 f(n) = 3n - 1; n ≥ 1

 f(n) = 3n + 1; n ≥ 1

 f(n) = 4n - 1; n ≥ 1

 f(n) = 4n + 1; n ≥ 1

agent0smith · Answer

First: Find the common difference - the amount added to each term to get the next term

anonymous · Answer

ok

anonymous · Answer

now what would be the answer (iam in ahurry) sorry

anonymous · Answer

please i am begging u

anonymous · Answer

the answer is B
you are dealing with a geometric sequence with an explicit answer

agent0smith · Answer

$$\Large a_n = a_1 + d(n-1)$$
a1 is first term, d is common difference

agent0smith · Answer

@zach1751 it's not a geometric sequence and whether he's in a hurry or not... don't just give answers.

agent0smith · Answer

or in your case, $$\Large f(n) = a_1 + d(n-1)$$ plug in numbers and simplify

anonymous · Answer

ok

anonymous · Answer

oh yeah you're right a geometric sequence is when each term is multiplied by a set non-zero number. and sorry.

anonymous · Answer

it ok

anonymous · Answer

wqhat #s @agent0smith

agent0smith · Answer

a1 is first term, d is common difference

agent0smith · Answer

I'm sure you can find those...

anonymous · Answer

o ok