document.write( "Question 317348: Need help solving this algebra problem: a long distance telephone call cost 10 cents for the first minute and 8 cents for e additional minute. the same call on long call systems cost 16 cents for the first minute and 6 cents for each additional minute. for what length phone calls is down east calling less expensive? \n" ); document.write( "

Algebra.Com's Answer #227295 by Fombitz(32388) $\"\"$ $\"About$

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Plan A: $\"10%2B8%2A%28t-1%29\"$ where t is the length of the call, tmin=1.
\n" ); document.write( "Plan B: $\"16%2B6%2A%28t-1%29\"$
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\n" ); document.write( "Find t, such that Plan A > PlanB.
\n" ); document.write( " $\"10%2B8%2A%28t-1%29%3E16%2B6%2A%28t-1%29\"$
\n" ); document.write( " $\"10%2B8t-8%3E16%2B6t-6\"$
\n" ); document.write( " $\"2%2B8t%3E10%2B6t\"$
\n" ); document.write( " $\"2t%3E8\"$
\n" ); document.write( " $\"t%3E4\"$
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\n" ); document.write( "After 4 minutes, Plan B is less expensive than Plan A.
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