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A floor refinishing company charges $5.25 per square foot to strip and refinish a tile floor for up to 800 square feet. There is an additional charge of $480 for toxic waste disposal for any job that includes more than 200 square feet of tile.
a) Express the cost, y, of refinishing a floor as function of the number of square feet, x, to be refinished.
b) Sketch the function.
c) What are the domain and range of the function.