document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007145>Question 1007145</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Q18. The function f(x) = 1 + 1.6 ln (x+1) models the average number of free-throws a basketball player can make consecutively during practice as a function of time, where x is the number of consecutive days the basketball player has practiced for two hours. After how many days of practice can the basketball player make an average of 6 consecutive free throws?\r<BR>\n" );
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document.write( "    a. 24 days<BR>\n" );
document.write( "    b. 80 days<BR>\n" );
document.write( "    c. 22 days<BR>\n" );
document.write( "    d. 78 days </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623160 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=623160\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We need to find x when this function<BR>\n" );
document.write( "f(x) = 1 + 1.6 ln (x+1)<BR>\n" );
document.write( "equals 6. So set it equal to 6 and solve<BR>\n" );
document.write( "f(x) = 1 + 1.6 ln (x+1) = 6<BR>\n" );
document.write( "1.6 ln (x+1) = 5<BR>\n" );
document.write( "ln (x + 1) = 3.125<BR>\n" );
document.write( "Now exponentiate and get<BR>\n" );
document.write( "x + 1 = 22.76<BR>\n" );
document.write( "x = 21.76 or about 22 days<BR>\n" );
document.write( "Choice C. </SPAN>\n" );
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