So my question is asking whats the first term in this a_{n}=2n-4 I know the common difference is 2 and it is arithmetic but can't figure out the first term
Thanks for any help
Fyi I tired 0, 1,-2 and n all wrong
There are many possibilities, as your question is not stating the set of n's on which a_n is calculated. Sounds like a high school question which typical means n=1 is the first term. What answer do you get for this value?