The table below shows a recent state income tax schedule for individuals filing a return.
SINGLE, HEAD OF HOUSEHOLD, OR MARRIED FILING SEPARATE
If taxable income is
Over | But Not Over | Tax Due Is
$0 | $15,000 | 3.5% of taxable income
$15,000 | $30,000 | $525 plus 5.95% of excess over $15,000
$30,000 | | $1417.50 plus 6.45% of excess over $30,000.
a. Write a piecewise definition for the tax due T(x) on an income of x dollars.