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Please show steps!

 

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.

 Feb 8, 2018
 #1
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There may be other ways of doing this....but....we can represent this as a piecewise function :

 

                 

                  5.25x                       if    0 ≤ x ≤ 200

y   = 

 

                 5.25x  +  480           if      200 < x 800

 

The domain is  [0, 800]

The range  is [ 0, 4680 ]

 

Here's the graph :https://www.desmos.com/calculator/wfww9jpzwu

 

 

cool cool cool

 Feb 8, 2018

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