Concept explainers
First-class postage The postage charged for first-class mail is a function of its weight. The U.S. Postal Service uses the following table to describe the rates.
Weight Increment | Rate($) |
First ounce or fraction of an ounce Each additional ounce or fraction | 0.490.21 |
Convert this table to a
Find the domain and range of P as it is defined above.
Give the domain and range of P as it is defined above.
Find the postage for a 2-ounce letter and for a 2.01 ounce letter.
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- What is the difference between the input and the output of a function?arrow_forwardLinear? Determine whether the given function is linear. f(x)=(2+3x)2arrow_forwardPostage Rates The 2014 domestic postage rate for first class letters weighing 3.5 oz or less is 49 cents for the first ounce or less, plus 21 cents for each additional ounce or part of an ounce. Express the postage P as a piecewise defined function of the weight x of a letter, with 0x3.5, and sketch a graph of this function.arrow_forward
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