Question 607048: give the first four terms of the arithemtic sequence for which a1=-22 and r=5
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! The letter r is commonly used for the common ratio in a geometric sequence.
In arithmetic sequences, each term is equal to the previous one plus a common difference, that is often called "d". So if you really meant an arithmetic sequence starting at -22, with a common difference of 5, then the second term would be
 ,
the third term would be  and the fourth term would be
 . So along with  , we know the first four terms to be
-22, -17, -12, -7.
If it was a geometric sequence with common ratio  , the terms would be
 ,  , and  .
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