Apps. and Interpretation for IBDP Maths Ebook 1 | Page 340

Your Practice Set – Applications and Interpretation for IBDP Mathematics
The number of pulse beats per minute v for the patient t minutes after his 10 km race
10
can be modelled by the equation v � � 70 , where
kt
k is a constant.
e
(c) After eight minutes, the number of pulse beats per minute is 75. Find k .
[3]
(d) After how many minutes do the number of pulse beats per minute 1.5 times the
number of breaths per minute?
[4]
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