Key, just in case there are varying letters used
U - unknown number
n - number you're looking for
d - common difference
Find the general term for Un for an arithmetic sequence given that:
U4=37 and U10 =67
I know how to do it up to here, but I don't know what to do next:
So I have the common difference but I don't know what to do with it now, even if I just insert it into the equation, I don't have the other values...