Question

A thermostat is set so that the temperature in laboratory freezer stays within 2.5 degrees F of 2 degrees F. Write and solve an absolute value equation to find the maximum and minimum temperatures in the freezer.

Answer 1

The absolute value gives the positive value of any given number inside the symbol. The absolute equation is,

2.5 = I d - 2I

The values of d can be calculated through,
2.5 = d - 2
d = 4.5

Also,
-2.5 = d - 2
-2.5 + 2 = d
d = -0.5

Thus, the maximum value of the temperature is 4.5 and the minimum value of the temperature is -0.5.