Use the function to predict the minimum target
heart rate for a person 20 years old,

Given the function y = -0.6x + 132, the minimum target heart rate for a person 20 years old 120 beats per minute
Given function;
y = -0.6x + 132
where,
If x = 20 years
y = -0.6x + 132
y = -0.6(20) + 132
= -12 + 132
y = 120 beats per minutes
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