document.write( "Question 604445: Write linear equation for phone company A has an intital monthly charge of $25.75 for providing their services and charges 30 cent for every minute. Phone company B charges $55.50 per month and 10 cent for every minute. Phone company C does not have an initial monthly charge. It charges 75 cent for every minute. \n" ); document.write( "
Algebra.Com's Answer #381228 by mananth(16946)\"\" \"About 
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let the talk time be m minutes\r
\n" ); document.write( "\n" ); document.write( "company A\r
\n" ); document.write( "\n" ); document.write( "C(m) = 25.75 + 0.3m\r
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\n" ); document.write( "\n" ); document.write( "Company B
\n" ); document.write( "C(m)=55.50+0.1m\r
\n" ); document.write( "\n" ); document.write( "Company C
\n" ); document.write( "C(m)= 0.75m
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