Mark is purchasing new tiles for his bathrooms. The home improvement store charges $48 for each box of tiles when three or fewer
boxes are purchased, $45 for each box when 4 to 8 boxes are purchased, $42 for each box when 9 to 19 boxes are purchased, and $38 for each box when more than nineteen boxes are purchased. a. Write a piecewise function describing the cost of the boxes of tile.
