Graph the function.
The accompanying table gives rates charged by the U.S. Postal Service for first-class letters in January 2009. Graph the function f(x) that gives the price of mailing a first-class letter, where a represents the weight of the letter in ounces and 0 ≤ x ≤ 3.5.
Weight Not Over | Price |
1 ounce | $0.42 |
2 ounces | $0.59 |
3 ounces | $0.76 |
3.5 ounces | $0.93 |
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