For each of the following explain whether the rate structure is progressive, proportional, or regressive:
a. plymouth county imposes a 5% tax on all retail sales in the county. taxpayers with incomes less than $12,000 receive a refund of the tax they pay.
b. the country of zambonia imposes a 10% tax on the taxable income of all individuals.
c. regan county imposes a property tax using the following schedule:
assessed value tax
$ -0- to $10,000 $40
$10,001 to $40,000 $40 + 1% of the value in excess of $10,000
$40,001 to $80,000 $340 + 2% of the value in excess of $40,000
$80,001 and above $1,140 + 3% of the value in excess of $80,000
d. the city of thomasville bases its dog licensing fee on the weight of the dog per the following schedule:
weight (in pounds)tax rate
0 to 40 $2 + 50% of weight
41 to 80 $22 + 40% of weight in excess of 40 lbs.
81 and above $36 + 30% of weight in excess of 80 lbs