. A company sells furniture for home assembly. Their largest bookcase has shelves that should be 105 cm, with a tolerance of 0.8 cm (105 cm * 0.8 cm). A set of six shelves had lengths of 105.3 cm, 105.2 cm, 105.0 cm, 104.1 cm, 105.1 cm, and 105.9 cm. a. Find the minimum and maximum allowable shelflength.