Find an equation of the sphere with center 
that touches the xy-plane.
Definitions:
Entrepreneur
An individual who organizes and operates a business or businesses, taking on financial risk to do so.
Serial Entrepreneur
An individual who continuously comes up with new ideas and starts new businesses, rather than staying to manage one business for a long period.
Work Hours
The designated periods during which employees are expected to perform their job duties.
Life Control
The extent to which individuals feel they have control over their own life circumstances and outcomes.
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Q18: Use the Midpoint Rule to approximate the
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