absolute value

Question

Leticia sets the thermostat in her apartment to 68 degrees. The actual temperature in her apartment can vary form this by as much 3.5 degrees. Write and solve an equation to find the minimum and maximum temperature.

Answer 1

temperature is 68 ± 3.5 degrees Fahrenheit.  Max uses +, Min uses - so Max is 71.5 deg F, min is 64.5 deg F.

 

|T-68| ≤ 3.5