polynomial

Question

The polynomial given by 1.3t^2 - 22t + 183 calculates an athlete's heart rate where t represents the elapsed time in minutes since exercise stopped. A graph of this polynomial is shown to the right. Complete parts a through c.

 

 

a) What is the heart rate when the athlete first stops exercising?

 

 

Answer 1

t is the elapsed time since the athlete stopped exercising.  So when he first stops exercising the elapsed time is zero.  Plug t=0 into the polynomial to get the heart rate