document.write( "Question 896337: A telephone company offers two long-distance plans.
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document.write( "Plan A: $25 per month and 5¢ per minute
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document.write( "Plan B: $6 per month and 14¢ per minute
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document.write( "For how many minutes of long-distance calls would plan B be financially advantageous?
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document.write( "A)(6, 14]
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document.write( "B)(14, 211)
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document.write( "C)(14, ∞)
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document.write( "D)[0, 211)
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document.write( "E)[6, 25] \n" );
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Algebra.Com's Answer #543515 by JulietG(1812)![]() ![]() You can put this solution on YOUR website! Plan A = 25 + .05x \n" ); document.write( "Plan B = 6 + .14x \n" ); document.write( "At what point will they be equal? \n" ); document.write( "25 + .05x = 6 + .14x \n" ); document.write( "Subtract .05x from each side \n" ); document.write( "25 = 6 + .09x \n" ); document.write( "Subtract 6 from each side \n" ); document.write( "19 = .09x \n" ); document.write( "Divide each side by .09 \n" ); document.write( "x = 211.111111 \n" ); document.write( "Plan B is more advantageous for callers who use 211 minutes or less \n" ); document.write( "Plan A is more advantageous for callers who use 212 minutes or more. \n" ); document.write( " |