Federal Income Taxes
In 2005, the lowest U.S.
income tax rate was 15 percent. Symbolically, graphically,
and numerically represent a function f that computes
the tax on a taxable income of x dollars. For the
numerical representation (table) let x=100, 2000, 3000, …., 7000
and for the graphical representation
let 0 < x < 30,000