Using the individual tax rate schedule, perform the following: a. Calculate the tax liability, after-tax earnings, and average tax rates for the following levels of partnership earnings before taxes: $13,300;$75,900;$301,000;$493,000; $1.1 million; $1.5 million; and $1.9 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. Calculate the tax liability, after-tax earnings, and average tax rates for the following levels of partnership earnings before taxes: $13,300;$75,900;$301,000;$493,000;$1.1 million; $1.5 million; and $1.9 million. (Round dollars to the nearest cent and round percentages to one decimal place.)