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algebra solution for tiffany had $330 in her account in 1999 and the value has been growing exponentially at a constant rate. the value of the account reached $590 in the 2007. what is the value in 2009?

Respuesta :

The value of the account in the year 2009 will be $682.

The acount's balance, in t years after 1999, can be modeled by the following equation.

In which A(t) is the amount after t years, P is the initial money deposited, and r is the rate of interest.

In which A(t) is the amount after t years, P is the initial money deposited, and r is the rate of interest.

  • $330 in an account in the year 1999
  • This means that
  • $590 in the year 2007
  • 2007 is 8 years after 1999, so P(8) = 590.
  • We use this to find r.
  • Determine the value of the account, to the nearest dollar, in the year 2009.
  • 2009 is 10 years after 1999, so this is A(10).
  • The value of the account in the year 2009 will be $682.

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