A cardiac monitor is used to measure the heart rate of a patient after surgery.

Question

A cardiac monitor is used to measure the heart rate of a patient after surgery. It compiles the number of heartbeats after t minutes. When the data in the table are graphed, the slope of the tangent line represents the heart rate in beats per minute.??t (min)          36     38    40     42    44?Heartbeats 2516 2657 2791 2928 3059??The monitor estimates this value by calculating the slope of a secant line. Use the data to estimate the patient's heart rate after 42 minutes using the secant line between the points with the given values of t. (Round your answers to one decimal place.)??
(a) t = 36 and t = 42

(b) t = 38 and t = 42

(c) t = 40 and t = 42

(d) t = 42 and t = 44

Explanation / Answer

Theses are really strange heartbeats, so please pay attention to the method as the numbers would be different if there were decimal points in them...

t (min)............36......38.....40......

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