Given:
The Minnesota state income tax for a single person in 2013 was determined by the rule:
T(x) = 0.0535x if 0 ≤ x ≤ 23100
T(x) = 1235.85 + 0.0705 (x - 23100) if 23100 ≤ x ≤ 75891
T(x) = 4957.62 + 0.0785 (x - 75891) if x > 75891
Where x represent the person taxable salary.
(a) To determine: The tax on the income $20,000.
b) To determine: The tax on the income $70,000.
c) To determine: The tax on the income $120,000.