The function f(t) = |98.6 - x|, represents a person's variance from normal body temperature, where x represents a person's current body
temperature in degrees Fahrenheit. Medical professionals say healthy
individuals should have a variance of no more than 0.5°F.

Part A: What can be said of an individual with a body temperature of
99.4°F? Justify your answer.

Part B: What can be said of an individual with a body temperature of
98.4°F? Justify your answer.

Part C: What is a reasonable domain that would indicate the individual is
not healthy?