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anonymous
 one year ago
PLEASE HELP ME IM STUCK ON THIS PRE CALC QUESTION??? PLEASE HELP ME FINISH MY WORK!
Find an equation for the nth term of the arithmetic sequence.
20, 16, 12, 8, ...
Here is what i have so far:
d=4
a1=20
c=a1d
c=24
an=dn+c
an=4n24
What are my next steps? Please help!
anonymous
 one year ago
PLEASE HELP ME IM STUCK ON THIS PRE CALC QUESTION??? PLEASE HELP ME FINISH MY WORK! Find an equation for the nth term of the arithmetic sequence. 20, 16, 12, 8, ... Here is what i have so far: d=4 a1=20 c=a1d c=24 an=dn+c an=4n24 What are my next steps? Please help!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0These are my answer choices A. an = 20 x 4(n  1) B. an = 20 + 4(n  1) C. an = 20 + 4(n + 2) D. an = 20 + 4(n + 1)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1\[\Large \text{nth term} = (\text{first term}) + (\text{common difference})(n1)\] \[\Large a_n = a_1 + d(n1)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, an= 20 + 4(n1)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What is that formula called? @jim_thompson5910

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I'm not sure of the specific name, but you can consider it the nth term of the arithmetic sequence formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright, thank you very much. I did not have that in my notes. Thanks! @jim_thompson5910

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you're welcome
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