Teenage workers are assumed to have ELASTIC labor supply, therefor a 5% increase in wage would result in GREATER percentage change in quantity of labor supplied.

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**Answer:**

The correct answer is letter "**A**": **The trend between the present and future values of an investment.
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**Explanation:**

**Compounding **is the process in which earnings of an investment are reinvested to earn more profits in a determined period of time. In other words, present values are used to convert them into future values expecting they will be higher. Compounding can also be defined as interest on interest.

To compute compounding figures it is necessary the<em> interest rate that could be earned out of an investment and its duration </em>and <em>the present value of the investment in dollars quantity.
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Thus, <em>the trend between the present and future value of the investment remains useless for compounding.</em>

**Your needs (employee) and your employers needs.**