Marginal corporate tax rates Using the corporate tax rate schedule given here , perform the following: a. Find the marginal tax rate for the following levels of corporate earnings before taxes: $13,400; $59,800; $89,800; $198,000; $398,000; $1.1 million; and $19.5 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. %. (Round to the nearest a. The marginal tax rate for earnings before taxes of $13,400 is | integer.) Marginal corporate tax rates Using the corporate tax rate schedule given here , perform the following: a. Find the marginal tax rate for the following levels of corporate earnings before taxes: $13,400; $59,800; $89,800; $198,000; $398,000; $1.1 million; and $19.5 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. %. (Round to the nearest a. The marginal tax rate for earnings before taxes of $13,400 is | integer.)