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Math Help - exponential curve S0S

  1. #1
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    exponential curve S0S

    Need help- greatly appreciate it!
    Find an equation of an exponential curve that contains the points (3,85) and (7,13) . Show work and do not use the regression capabilities of your calculator. (The last part led to my demise)
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by tinycara View Post
    Need help- greatly appreciate it!
    Find an equation of an exponential curve that contains the points (3,85) and (7,13) . Show work and do not use the regression capabilities of your calculator. (The last part led to my demise)
    f(x)=Ce^{bx}

    So we know that 85=Ce^{3b}
    and that 13=Ce^{7b}

    Now solve those simultaneously
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  3. #3
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    Same question

    That same question was in my worksheet! I'm stuck on how to solve simultaneously how would you go about doing that?
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