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Home > MC2 > Chapter 10 > Lesson 10.1.6 > Problem 10-79


Mary wants to have to travel to South America when she is . She currently has in a savings account earning annual compound interest. Mary is now.

  1. If Mary does not take out or deposit any money, how much money will Mary have when she is ?

    Formula for compound interest:

  2. Will Mary have enough money for her trip when she is ?

    Find how much money Mary will have in years.

    Is this amount enough?

    Use the formula in (a).