In 2010, the cost of mailing a first-class large envelope letter in the United States wa...

In 2010, the cost of mailing a first-class large envelope letter in the United States was 88 cents up to the first ounce and an additional 17 cents for each ounce beyond the first ounce up to a total of 13ounces. We can use the greatest integer function to express this rate as

Sketch the graph of y = P(w) and determine the domain and range of P.