Etween 2017 and 2018, a small businessperson's income increased from $200,000 to $220,000. The annual state income taxes that she paid increased from $5 comma 200 to $6 comma 300. What was her marginal state income tax rate in 2018? Did this individual experience proportional, progressive, or regressive taxation? Explain briefly This small businessperson's marginal state income tax rate in 2018 was nothing percent