document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121392>Question 1121392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For a certain state, the function<BR>\n" );
document.write( "f(x)=0.4x2&#8722;32x+820<BR>\n" );
document.write( "models the number of accidents, f(x), per 50 million miles driven as a function of a driver's age, x, in years, where x includes drivers from ages 16 to 74, inclusive. The graph of f is shown above. Use the equation for f to solve:<BR>\n" );
document.write( "a) Find the number of accidents per 50 million miles driven for drivers age 18. <BR>\n" );
document.write( "Answer: <BR>\n" );
document.write( " accidents per 50 million miles\r<BR>\n" );
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document.write( "b) Find the number of accidents per 50 million miles driven for drivers age 50. <BR>\n" );
document.write( "Answer: <BR>\n" );
document.write( " accidents per 50 million miles\r<BR>\n" );
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document.write( "c) For what value of x does the graph have its lowest point? This is the age of drivers with the fewest accidents.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #737268 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=737268\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. x=18<BR>\n" );
document.write( "0.4(324)-576+820=129.6-576+820=373.6 accidents/50 M miles\r<BR>\n" );
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document.write( "b. 0.4(2500)-1600+820=220 accidents/50 M miles \r<BR>\n" );
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document.write( "c. The x value for the vertex is -b/2a=32/0.8 or 40 years old (180 accidents/50 M miles) </SPAN>\n" );
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