SOLUTION: find the tenth term in the sequance: 13,17,21,25.... thanks for your time!

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Question 51774: find the tenth term in the sequance:
13,17,21,25....
thanks for your time!
Answer by Nate(3495) About Me  (Show Source):
You can put this solution on YOUR website!
13 + 4 ~> 17 + 4 ~> 21 + 4 ~> 25 ....
a(x) = a(1) + (x - 1)d
a(10) = 13 + (9)4
a(10) = 13 + 36 = 49