document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163036>Question 1163036</A>: <I><SPAN STYLE=\"word-break: break-all;\"> As a sales person in a cell phone company, Evan is paid a daily salary<BR>\n" );
document.write( "plus commission. When his sales are $1000, he makes $100. When his<BR>\n" );
document.write( "sales are $1400, he makes $120.<BR>\n" );
document.write( "a. Write a linear function to model this situation.<BR>\n" );
document.write( "b. What are Evan’s daily salary and commission rate?<BR>\n" );
document.write( "c. How much would Evan make in a day if his sales were $2000? </SPAN>\n" );
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document.write( "As a sales person in a cell phone company, Evan is paid a daily salary<BR>\n" );
document.write( "plus commission. <BR>\n" );
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document.write( "If y is earnings for the day, then y = commission + dailysalary.\r<BR>\n" );
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document.write( "When his sales are $1000, he makes $100.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100=1000%2Am%2Bb ALIGN=MIDDLE  ALT=\"100=1000%2Am%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "for commission rate m and daily salary b.\r<BR>\n" );
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document.write( "When his sales are $1400, he makes $120.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=120=1400m%2Bb ALIGN=MIDDLE  ALT=\"120=1400m%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "System of Equations  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%281000m%2Bb=100%2C1400m%2Bb=120%29 ALIGN=MIDDLE  ALT=\"system%281000m%2Bb=100%2C1400m%2Bb=120%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Subtract first equation from second equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=400m=20 ALIGN=MIDDLE  ALT=\"400m=20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m=20%2F400 ALIGN=MIDDLE  ALT=\"m=20%2F400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m=2%2F40 ALIGN=MIDDLE  ALT=\"m=2%2F40\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28m=1%2F20%29 ALIGN=MIDDLE  ALT=\"highlight_green%28m=1%2F20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Evan gets $1 in commission for every $20 in sales he produces.\r<BR>\n" );
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document.write( "Using the first equation of the system,<BR>\n" );
document.write( "1000m+b=100<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=100-1000m ALIGN=MIDDLE  ALT=\"b=100-1000m\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=100-1000%281%2F20%29 ALIGN=MIDDLE  ALT=\"b=100-1000%281%2F20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28b=50%29 ALIGN=MIDDLE  ALT=\"highlight_green%28b=50%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "His daily base rate without any sales is $50.\r<BR>\n" );
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document.write( "If x is his amount of sales he produces, then  his daily salary becomes <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=%281%2F20%29x%2B50%29 ALIGN=MIDDLE  ALT=\"highlight%28y=%281%2F20%29x%2B50%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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