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djyliett [7]
1 year ago
6

The U.S. 2010 federal income tax for a single person with taxable income x dollars is f(x) dollars, where T is the function defi

ned by federal law as follows. A. What is the the 2010 federal income tax for a single person whose taxable income that year was 4000 dollars? Tax = ________ dollars B. What is the 2010 federal income tax for a single person whose taxable income that year was 170000 dollars? Tax = ________ dollars C. What is the taxable income for a single person whose 2010 federal income tax was 105000 dollars? Taxable income = _______ dollars

Mathematics
1 answer:
Alika [10]1 year ago
6 0

Part A

What is the 2010 federal income tax for a single person whose taxable income that year was 4000 dollars?

The function is

T(x)=0.1x

so

For x=4,000

substitute

T(x)=0.1*(4,000)

<h2>T(x)=$400</h2>

Part B

What is the 2010 federal income tax for a single person whose taxable income that year was 170000 dollars?

the function is

T(x)=0.28x-6,290.75

For x=170,000

substitute

T(x)=0.28*(170,000)-6,290.75

<h2>T(x)=$41,309.25</h2>

Part C

What is the taxable income for a single person whose 2010 federal income tax was 105000 dollars?

The function is

T(x)=0.28x-6,290.75

For T(x)=105,000

substitute

105,000=0.28x-6,290.75

solve for x

0.28x=105,000+6,290.75

0.28x=111,290.75

<h2>x=$397,466.96</h2><h2 />
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