document.write( "Question 353356: A long distance telephone call using Down East Calling costs 10 cents for the first minute and 8 cnts for each additional minute. The same call on Long Call Systems costs, 16 cents for the first minute and 6 cent for each additional minute. For what length phone calls is Down East Calling less expensive: \n" ); document.write( "
Algebra.Com's Answer #252480 by stanbon(75887)\"\" \"About 
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A long distance telephone call using Down East Calling costs 10 cents for the first minute and 8 cents for each additional minute.
\n" ); document.write( "D(x) = 10 + 8(x-1)
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\n" ); document.write( "The same call on Long Call Systems costs, 16 cents for the first minute and 6 cent for each additional minute.
\n" ); document.write( "L(x) = 16 + 6(x-1)
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\n" ); document.write( "\n" ); document.write( "For what length phone calls is Down East Calling less expensive:
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\n" ); document.write( "Solve D(x) < L(x) for \"x\":
\n" ); document.write( "10+8(x-1) < 16+6(x-1)
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\n" ); document.write( "10+8x-8 < 16+6x-6
\n" ); document.write( "2+8x < 10+6x
\n" ); document.write( "2x < 8
\n" ); document.write( "x < 4 minutes
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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