The density function and the cumulative distribution function for the ages of people in an elementary school are graphed below. About what percent of the people in the school are adults? I. 
II. 
Definitions:
Tickets
Documents or electronic codes that grant the holder a right to admission to an event, travel on a vehicle, or participate in a lottery.
Proceeds Of Estate
The total sum of money or assets that are distributed from an estate after all debts and expenses have been paid.
Grandchildren
The children of one's son or daughter.
Machine Time
The duration for which a machine is operated or available for use in the production of goods or services.
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