SOLUTION: dots represent a pattern -> .... ......... ................ can you write a rule to predict how many dots will be in the 10th step ?

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Question 920668: dots represent a pattern ->
....
.........
................
can you write a rule to predict how many dots will be in the 10th step ?

Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Each term is a square of 1 more than its index.