SOLUTION: The next number in the series 10, -5, 25, -35, 85, -155 is:

Algebra ->  Inverses -> SOLUTION: The next number in the series 10, -5, 25, -35, 85, -155 is:       Log On


   

Question 1023165: The next number in the series 10, -5, 25, -35, 85, -155 is:
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
325.
The sequence is modeled by the equation a%5Bn%5D+=+10+-+5%281-%28-2%29%5E%28n-1%29%29.
Plug in n = 7 into the equation to get a%5B7%5D+=325.