document.write( "Question 325166: Media Services charges $20 for a phone and $30/month for its economy plan. The equation c=30t+20 describes the total cost, c, of operating a Media Services phone for t months.\r
\n" ); document.write( "\n" ); document.write( "The total cost of services for three months is __.\r
\n" ); document.write( "\n" ); document.write( "If a customer only has $90 avaiable, how many months of service can she recieve?\r
\n" ); document.write( "\n" ); document.write( "a) 2 1/2
\n" ); document.write( "b) 2 1/3
\n" ); document.write( "c) 2
\n" ); document.write( "d) 3
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Algebra.Com's Answer #232845 by stanbon(75887)\"\" \"About 
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Media Services charges $20 for a phone and $30/month for its economy plan. The equation c=30t+20 describes the total cost, c, of operating a Media Services phone for t months.
\n" ); document.write( "The total cost of services for three months is
\n" ); document.write( "c(3) = 30(3)+20 = 90+20 = 110.
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\n" ); document.write( "If a customer only has $90 avaiable, how many months of service can she recieve?
\n" ); document.write( "Solve: 90 = 30t+20 for \"t\":
\n" ); document.write( "70 = 30t
\n" ); document.write( "t = 7/3 = 2 1/3 months
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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\n" ); document.write( "a) 2 1/2
\n" ); document.write( "b) 2 1/3
\n" ); document.write( "c) 2
\n" ); document.write( "d) 3
\n" ); document.write( "
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