urgent theory explanation needed maths

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Bids
3
Avg Bid (USD)
$127
Project Budget (USD)
$30 - $250

Project Description:
http://ge.tt/99ugDKI/v/0
please let me know if you can do
i can pay 35$
All the details in above link and i need perfect way of answer . milestone cannot be done now as my fund didn't reach yet in my account after uploading

Skills required:
Accounting, Algorithm, Mathematics, Statistics
About the employer:
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