(Figure: Biscuits and Cookies PPFs) Looking at Greg and Melissa's production possibilities frontiers (PPFs) , what production and trade situation would allow both Greg and Melissa to consume a combination of biscuits and cookies outside their PPF? 
Definitions:
Present Value
The present value of a future amount of money or sequence of cash flows, based on a certain rate of return.
Notes Payable
Short or long-term financial obligations evidenced by promissory notes, requiring the borrower to repay the principal amount along with any accrued interest.
Market Interest Rate
The prevailing rate of interest available in the marketplace for securities of similar risk and maturity.
Annual Payments
Payments that are due once per year, commonly used in the context of loans, leases, or other financial agreements.
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