document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=412503>Question 412503</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The table shows a person's heart rate after exercise has stopped.\r<BR>\n" );
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document.write( "Time(min) 0,2,4<BR>\n" );
document.write( "Heart rate(bpm) 154,106,90\r<BR>\n" );
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document.write( "(a) find the values for the constants a, h, and k so that the formula f(x)=a(x-h)^2 + k models the data, where x represents time and 0 &#8804; x &#8804; 4.\r<BR>\n" );
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document.write( "(b) Evaluate f(1) and interpret the result.<BR>\n" );
document.write( "(c) Estimate the times when the heart rate was from 115 to 125 beats per minute. </SPAN>\n" );
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