The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct. 
Definitions:
Opportunity Cost
The cost of not choosing the next best alternative when making a decision.
Leisure
Time utilized for enjoyment and relaxation, free from the obligations of work or serious responsibilities.
Substitution Effect
The change in demand for a good that results from a change in price, making the good more or less expensive relative to other goods.
Price Change
An alteration in the cost of a good or service, which can affect demand and supply dynamics in the market.
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