document.write( "Question 949246: The cost of a long-distance phone call is $0.41 for the first minute and $0.30 for each additional minute. If the total charge for a long-distance call is $7.91, how many minutes was the call?\r
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document.write( "Please help me! Help me find a solution with steps so that I know how to handle a math problem like this in the future. Thanks! \n" );
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Algebra.Com's Answer #579448 by macston(5194)![]() ![]() You can put this solution on YOUR website! m=number of minutes of call; c=cost \n" ); document.write( "c=$0.41+$0.30(m-1) \n" ); document.write( "$7.91=$0.41+$0.30m-$0.30 combine like terms \n" ); document.write( "$7.91=$0.30m+$0.11 Subtract $0.11 from each side. \n" ); document.write( "$7.80=$0.30m Divide each side by $0.30. \n" ); document.write( "26=m ANSWER: The call was 26 minutes \n" ); document.write( "CHECK: \n" ); document.write( "c=$0.41+$0.30(m-1) \n" ); document.write( "$7.91=$0.41+$0.30(26-1) \n" ); document.write( "$7.91=$0.41+$7.50 \n" ); document.write( "$7.91=$7.91 \n" ); document.write( " \n" ); document.write( " |