In the light curve below, what is the period of the eclipsing binary? 
Definitions:
Market Price
The price at which an asset or service is traded in the open market.
Treasury Bills
Short-term government securities issued at a discount from the face value and maturing at par, representing a form of borrowing by the government.
Real Rate Of Return
The annual percentage return realized on an investment, adjusted for changes in the price level due to inflation or other external factors.
Inflation
The speed at which the overall price level for goods and services increases, gradually diminishing the buying power.
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