Use Lagrange multipliers to find the maximum value of the function subject to the given constraints. 
Definitions:
Return
The process of a customer bringing back a purchased product to the seller for a refund, exchange, or credit.
Project
A temporary endeavor undertaken to create a unique product, service, or result, often within constraints of time, quality, and budget.
Annual Return
The percentage change in an investment's value over a one-year period, including dividends and interest.
Future Value
The value of an investment at a specified date in the future, taking into account factors like compound interest or returns.
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