tax rates as they relate to income economics homework help

10CHP3. Suppose tax rates are related to income as follows: ( please answer in full sentences as needed) as many words as you need to complete answering the following questions

Income Taxes

$1000 $200

$2000 $350

$3000 $450   

a. what percentage of income is paid in taxes at each level?

b. is the tax rate progressive, proportional or regressive?

c. what is the marginal tax rate on the first $1000 of income? the second $1000? the third $1000?

4CHP4. why is a firm willing and able to increase the quantity supplied as the product price increases?

there is no answer to those
(150 words) or more

unfortunately my tutor didnt finish those for me. please do this fast as possible. 

 
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