a. Find the marginal tax rate for the following levels of corporate earnings before taxes: $16,900; $61,800; $88,300; $197,000; $404,000; $1.3 million; and $19.6 million. b. Plot the marginal tax rates (measured on the y axis) against the pretax income levels (measured on the x axis). Explain the relationship between these variables. a. The marginal tax rate for earnings before taxes of $16,900 is %. The total taxes due for earnings before taxes of $16,900 is S The marginal tax rate for earnings before taxes of $61,800 is%. The total taxes due for earnings before taxes of $61,800 is S The marginal tax rate for earnings before taxes of $88,300 is %. The total taxes due for eamings before taxes of $88,300 is S. The marginal tax rate for eanings before taxes of $197,000 is %. The total taxes due for earnings before taxes of $197,000 is $ The marginal tax rate for earnings before taxes of $404,000 is % The total taxes due for earnings before taxes of $404,000 is $. The marginal tax rate for earmings before taxes of $1.3 million is%. The total taxes due for earnings before taxes of $1.3 million is $ The marginal tax rate for earnings before taxes of $19.6 million is