Question

Hey Can some one help me please? I'll give a Medal. What is the 50th term in this sequence that begins -6, 0, 6, 12

Answer 1

@k_lynn

Answer 2

to check, you can substitute one or two terms.

Answer 3

That wasnt right i'll get you my answer chocies.
292
288
286
290

Answer 4

@k_lynn

Answer 5

Let's say the sequence is
a1=-6
a2=0
a3=6
a4=12
We try to make a rule such that all four terms are satisfied.
Common difference =12-6=6-0=....=6
so the sequence is
an=6n+k, but we don't know k yet, so substitute the first term:
a1=6(1)+k=-6
Solve for k to get k=-6-6(1)=-12
We have thus established that the rule is:
\(\Large a_n=6n-12\)
Check for n=4
a4=6(4)-12=24-12=12.. yay!

Answer 6

i don't get it

Answer 7

@kitty_eubanks

Answer 8

For the 50th term, put n=50 in the rule!
\(\Large a_{250} = ?\)

Answer 9

so it would be 286?

Answer 10

I think i'm doing something wrong?

Answer 11

\(\Large a_{250} = 6*50-12 = ?\)