a. The driver’s seat of a sport car is comfortable for people of height 5 feet 8 inches, plus or minus 8 inches

Thus if a person has height x then the person will be comfortable if the difference between his height and 5 feet 8 inches is equal to plus or minus 8 inches

That is a person with height x is comfortable if:

Write the equation as an absolute value equation

Therefore a person with height x will be uncomfortable if: