1. HEALTH A person’s maximum heart rate is where is the person’s age in years for When a person exercises, it is recommended that the person strive for a heart rate that is at least 50% of the maximum and at most 75% of the maximum. (Source: American Heart Association)
(a) Write a system of inequalities that describes the exercise target heart rate region.
(b) Sketch a graph of the region in part (a).
(c) Find two solutions to the system and interpret their meanings in the context of the problem.
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