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October 2, 2014

Homework Help: Pre Cal long problem( Can I see the work on this)

Posted by Brittany on Tuesday, March 18, 2008 at 4:16pm.

A stuffed animal dealer tells you that a fish he bought for $8 four years ago is now worth $200 follow the steps below to find the effective yield for this investment.

Begin with the equation 8(1+r) ^4=200.Solve for (1+r) ^4
Take the common logarithm of each side of the equation.

Use the power property of Logarithms to rewrite log (1+r) ^4
Solve the equation for log (1+r)
Use exponential logarithmic inverse property to eliminate the logarithm
(Hint: Remember that these are common logarithms) Then solve for R.

If the current trend continues, how much will a $1000 investment in stuffed fish be worth in 3 years?


Under these conditions how long will it be before you can buy your computer? Explain how you found your answer.

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