document.write( "Question 1060943: Suppose that an engineer determines that she can use the formula -t^2+14 less than or equal to P to estimate when the price of carbon fibre will be P dollars per kilogram or less in t years from the present. when will the carbon fibre be available at $10/kg or less? \n" ); document.write( "

Algebra.Com's Answer #675770 by ikleyn(52777) $\"\"$ $\"About$

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\n" ); document.write( "Suppose that an engineer determines that she can use the formula -t^2+14 less than or equal to P to estimate when the price
\n" ); document.write( "of carbon fibre will be P dollars per kilogram or less in t years from the present. when will the carbon fibre be available at $10/kg or less?
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document.write( "To determine \"t\", you need to solve the equation\r\n" );
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document.write( "-t^2 + 14 = 10.\r\n" );
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document.write( "----->\r\n" );
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document.write( "-t^2 = 10 - 14,\r\n" );
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document.write( "-t^2 = -4,\r\n" );
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document.write( "t^2 = 4,\r\n" );
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document.write( "t = 2.\r\n" );
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document.write( "Answer.  When ?  - In two years from now.\r\n" );
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