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University
| Teaching Since: | Apr 2017 |
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bachelor in business administration
Polytechnic State University Sanluis
Jan-2006 - Nov-2010
CPA
Polytechnic State University
Jan-2012 - Nov-2016
Professor
Harvard Square Academy (HS2)
Mar-2012 - Present
Suppose that when you were one year old, your grandmother gave you a shiny silver dollar. Your parents put that silver dollar in a savings account with a guaranteed 9% interest rate, and then promptly forgot about it.
a. Use the Rule of 72 to estimate how much that account will grow to by the time you are 65.
b. Calculate exactly how much you will have in that account using the formula for compound interest.
c. How close are your answers to (a) and (b)?
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