Normal human body temperature is 98.6° F. A temperature x that differs from normal by at least 1.5° F is considered unhealthy. A formula that describes this is

|x - 98.6| ≥ 1.5 is given.

A. Show that a temperature of 97°F is unhealthy.

B. Show that a temperature of 100°F is NOT unhealthy.

Question:

Must I tackle this problem similar to the Foreign Household Voltage question posted the other day?