document.write( "Question 118510: I need to take a real-life situation and create an equation or inequality that could be used for analysis, prediction, or decision making. Then, draw a graph to depict the variables in my siuation. Use the graph and what you know about linear inequalities to discuss the significants of your finding.\r
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document.write( "My real-life siuation is comparing cell phone plans. I have two plans
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document.write( "29.99 a month for 200 minutes and $.45 each additional minute. The other is 29.99 a month for 300 minutes and $.40 each additional minute. They each have an activation fee of 90.00. I am confused on how to write this in a equation or inequality and how to create the graph. I believe once I figure out the equation then the graph should come out correctly. Thank you for any help that you can give. \n" );
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Algebra.Com's Answer #86634 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! I have two plans \n" ); document.write( "29.99 a month for 200 minutes and $.45 each additional minute. \n" ); document.write( "------- \n" ); document.write( "Comment: Do you want an equation that covers one month or \n" ); document.write( "one year. Do the \"additional minutes\" refer to one month \n" ); document.write( "or to one year. \n" ); document.write( "2nd Comment: I think you are making this much more complicated \n" ); document.write( "than it needs to be. Why not compare monthly costs for the two \n" ); document.write( "plans where one has fixed fee of $20 and 50 cents for all minutes \n" ); document.write( "over 200, and the other charges 25 cents per minute with no fixed \n" ); document.write( "fee. \n" ); document.write( "Then you would have: \n" ); document.write( "1st Plan: \n" ); document.write( "C(x) = 20+1.50(x-200) \n" ); document.write( "2nd Plan: \n" ); document.write( "C(x) = 0.25x \n" ); document.write( " \n" ); document.write( "============= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |