document.write( "Question 104389: I don't know how to figure this out On thursday marie worked for 6 hours and handled 20 calls. On friday marie worked 8 hours and handled 30 calls. If she worked 4 hours how many calls did she take? Please help I think the m=5 but i'm not sure what to do next. \n" ); document.write( "

Algebra.Com's Answer #75957 by stanbon(75887) $\"\"$ $\"About$

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On thursday marie worked for 6 hours and handled 20 calls. On friday marie worked 8 hours and handled 30 calls. If she worked 4 hours how many calls did she take?
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\n" ); document.write( "You have two points: (6,20) and (8,30)
\n" ); document.write( "slope = (30-20)/(8-6) = 5
\n" ); document.write( "Equation form is: calls = (slope)(hours)+b
\n" ); document.write( "Substitute to find \"b\", as follows:
\n" ); document.write( "20 = 5*6 + b
\n" ); document.write( "b = -10
\n" ); document.write( "EQUATION:
\n" ); document.write( "calls = 5(hours)-10
\n" ); document.write( "------------
\n" ); document.write( "Let # of hours be 4
\n" ); document.write( "Then # of calls = 5*4-10 = 10
\n" ); document.write( "--------------
\n" ); document.write( "Marie took 10 calls
\n" ); document.write( "==============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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