Inequality

Question

The temperature in a fish tank must be at least 77 degrees Fahrenheit and at most 83 degrees Fahrenheit. a) Write a compound inequality that describes acceptable temperatures for a fish tank. b) Graph the inequality

Answer 1

Let T = temperature of the fish tank

 

The temperature in a fish tank must be at least 77 degrees Fahrenheit (T ≥ 77ºF) and at most 83 degrees Fahrenheit (T ≤ 83ºF).

 

a) Write a compound inequality that describes acceptable temperatures for a fish tank.

 

83ºF ≥ T ≥ 77ºF

 

b) Graph the inequality

 

* on a number line this is just the distance between the two temperatures, closed circles to show T is also equal to.