document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=918965>Question 918965</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please tell me what I did wrong on the last part of this math problem and what is the correct answer?<BR>\n" );
document.write( "Rite-Cut riding lawnmowers obey the demand equation p= -1/20x+1,030. The cost of producing x lawnmowers is given by the function C(x)= 150x+3,000. <BR>\n" );
document.write( "a. Express the revenue R as a function of x. Simplify, do not factor answer. <BR>\n" );
document.write( "The answer I got was 1,030x-1/20x^2 <BR>\n" );
document.write( "b. Express the profit P as a function of x. Simplify, do not factor answer <BR>\n" );
document.write( "The answer I got was -1/20x^2+880x-3000 <BR>\n" );
document.write( "c. Find the value of x that maximizes profit. What is the maximum profit? <BR>\n" );
document.write( "The answers I got were 8,800 and 3,869,000 <BR>\n" );
document.write( "d. What price should be charged in order to maximize profit? Round to the nearest cent. <BR>\n" );
document.write( "The answer I got here was $150.34 but it says I am wrong, what is the correct answer? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #557364 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=557364\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d. p = (-1/20)x + 1030<BR>\n" );
document.write( "p(8800) = (-1/20)8800 + 1030<BR>\n" );
document.write( "p = -440 + 1030 = $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+highlight_green%28590%29 ALIGN=MIDDLE  ALT=\"+highlight_green%28590%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "checking<BR>\n" );
document.write( "3,869,000 = 590x - (150x + 3000)<BR>\n" );
document.write( "3,872,000/440 = 8800 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );