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Homework Help: Exponential regression math 30 pure

  1. May 24, 2008 #1
    1. The problem statement, all variables and given/known data
    Determine the inverse of the exponential regression equation that you foun in the first bullet.


    2. Relevant equations

    y=ab^x

    3. The attempt at a solution

    • in the first bullet i got the equation

    y= (8.7166)(0.93240)^x

    • then i found using logs that x = -5

    so the exponential regresion inverse

    would be

    x= (8.7166)(0.93240)^y
    • this wil become
    log(0.9324)^(x / 8.7166)=y

    • so would that be the answerd ..or would i have to replace the x for the -5 and then solve for y
    • and isolate x to leave the formula as x=ab^y were i have all the values for a b and y ....??

    thank in advance for your help and time reading my Thread .
     
  2. jcsd
  3. May 24, 2008 #2
    hello one more thing ..
    the next bullet ask me the following...

    • state whether the exponential regression model or the geometric sequence model better describes the given scenario.(explain your reasoning)

    what are thay asking me to do..could anyone refrace that i dont understant even wht it means...thanks..
     
  4. May 25, 2008 #3
    this athachement are part of the 1st post... it shows other parts of the same question mentioned...
    thanks..
     

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