Andrew earns $45,300 in taxable income annually, and pays federal income taxes of $5,345.40. What is Andrew's net federal income
2 answers:
Answer:
c. 11.8%
Step-by-step explanation:
We have been given that Andrew earns $45,300 in taxable income annually, and pays federal income taxes of $5,345.40.
To find Andrew's net federal income tax rate, we need to find $5,345.40 is what percent of $45,300.
Therefore, Andrew's net federal income tax rate is 11.8% and option 'c' is the correct choice.
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<h2>It must be shown that both j(k(x)) and k(j(x)) equal x</h2>Step-by-step explanation:
Given the function j(x) = 11.6 and k(x) =
, to show that both equality functions are true, all we need to show is that both j(k(x)) and k(j(x)) equal x,
For j(k(x));
j(k(x)) = j[(ln x/11.6)]
j[(ln (x/11.6)] = 11.6e^{ln (x/11.6)}
j[(ln x/11.6)] = 11.6(x/11.6) (exponential function will cancel out the natural logarithm)
j[(ln x/11.6)] = 11.6 * x/11.6
j[(ln x/11.6)] = x
Hence j[k(x)] = x
Similarly for k[j(x)];
k[j(x)] = k[11.6e^x]
k[11.6e^x] = ln (11.6e^x/11.6)
k[11.6e^x] = ln(e^x)
exponential function will cancel out the natural logarithm leaving x
k[11.6e^x] = x
Hence k[j(x)] = x
From the calculations above, it can be seen that j[k(x)] = k[j(x)] = x, this shows that the functions j(x) = 11.6 and k(x) =
are inverse functions.