Postage rates: The postal charge function from Example 9 is simply a transformation of the...

Postage rates: The postal charge function from Example 9 is simply a transformation of the basic ceiling function . Using the ideas from Section 2.2, (a) write the postal charges as a step function C(w), where C(w) is the cost of mailing a large envelope weighing w ounces, and (b) state the domain of the function. Then use the function to find the cost of mailing reports weighing: (c) 0.7 oz, (d) 5.1 oz, (e) 5.9 oz; (f) 6 oz, and (g) 6.1 oz.