Average corporate tax rates Using the corporate tax rate schedule given here

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, perform the following:a. Calculate the tax liability, after-tax earnings, and average tax rates for the following levels of corporate earnings before taxes:

$ 12 comma 700$12,700;

$ 78 comma 500$78,500;

$ 305 comma 000$305,000;

$ 502 comma 000$502,000;

$ 1.9$1.9

million;

$ 9.7$9.7

million; and

$ 20.2$20.2

million.

b. Plot the average tax rates (measured on the y axis) against the pretax income levels (measured on the x axis). What generalization can be made concerning the relationship between these variables?

a. Find the marginal tax rate for the following levels of corporate earnings before taxes:

$ 12 comma 700$12,700;

$ 78 comma 500$78,500;

$ 305 comma 000$305,000;

$ 502 comma 000$502,000;

$ 1 comma 900 comma 000$1,900,000;

$ 9.7$9.7

million; and

$ 20.2$20.2

million.The tax liability for earnings before taxes of

$ 12 comma 700$12,700

is

$nothing.

(Round to the nearest dollar.)