16 7 Points DETAILS The postage charged for first class mail is a function of its weight A postal service uses the fol Rate 0 44 0 23 HARMATHAP12 2 4 051 Weight Increment First ounce or fraction of an ounce Each additional ounce or fraction a Convert this table to a piecewise defined function that represents postage for letter P x b Find P 1 8 0 x 1 1 x 2 if 2 x 3 if 3 x 4 if if