Marginal tax rates Using the tax rate schedule given hete . . perform the following: a. Find the marginal tax rate for the following levels of sole proprietorship earnings before taxes: $16,600;$59,000;$90,400;$160,000;$230,000; $441,900; and $1 million. b. Plot the marginal tax rates (measured on the y-axis) against the pretax income levels (measured on the x-axis). a. The marginal tax rate for eamings betore taxes of $16,600 is 12%. (Round to the nearest integer.) The total tax liability for earnings betore taxes of $16,600 is ? (Round to the nearest dollar)