Humans have a normal body temperature of 98.6°F. A temperature, x, that differs from normal by at least 2°F is considered unhealthy. Which inequality could be used to determine whether a temperature is unhealthy?
A.|x − 98.6| ≤ 2
B.|x − 98.6| > 2
C.|x − 98.6| ≥ 2
D.|x − 98.6| < 2
Since your question says "A temperature, x, that differs from normal by at least 2°F is considered unhealthy", then how do you write " at least" in the 4 choices given to you?
I would say "C" and ≥ 2, because that means "equal to or greater than 2". In other words it says "at least".
