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  • 27-05-2014
  • Mathematics
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Terri's teacher gives her the equation 3(5)^x=127-2x, and tells her that she will not know how to solve it algebraically. Explain how Terri could use a graph to solve the equation, find the value of x to the nearest tenth

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kate200468
kate200468 kate200468
  • 27-05-2014

\(f(x)=3\cdot5^x\ \ \ and\ \ \ g(x)=127-2x\\\\f(x)=g(x)\ \ \ \Leftrightarrow\ \ \ x\approx2.3043\\\\the\ graph\ in\ annex\)

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