Perform the indicated operations and simplify. 
Definitions:
Marginal Tax Rate
The rate of additional federal income tax to be paid on an extra dollar of income.
Average Tax Rate
The proportion of total income that is paid as taxes, calculated by dividing the total taxes paid by the total taxable income.
Federal Personal Income Tax
A tax levied by the federal government on the income of individuals, adjusted for various deductions and exemptions.
Personal Income Tax
A tax levied on individuals or households based on the level of their income.
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Q180: Perform the indicated operations and simplify.
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