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anonymous

  • 5 years ago

Solve for x algebraically in 7^(-x+2) = 0.005, rounding your answers to three signicant digits. A) 4.32 B) 4.72 C) 5.12 D) 5.52 E) 5.92

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  1. anonymous
    • 5 years ago
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    You'll need to use logs for this.

  2. anonymous
    • 5 years ago
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    Do I use 7ln(-x+2) = ln 0.005 ???

  3. anonymous
    • 5 years ago
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    You do take the log of both sides, but I would suggest using log base 10 and what you have there isn't quite correct even if you were going to use the natural log.

  4. anonymous
    • 5 years ago
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    Remember that \[log(a^b) = b*log(a)\]

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