Julie changed her filing status on last year's tax return from "single" to "head of household." this resulted in what?
a. her standard deduction went down
b. there was no change in her standard deduction
c. she gets fewer exemptions
d. her standard deduction went up

D. Her standard deduction went up.

Step-by-step explanation:

We know that Julie changed her filing status from 'single' to 'head of household'.

Now, 'standard deduction' is the amount that is subtracted from the income before income tax is applied. It is based on the status of filing and differs for different status.

Now, the two filing status are single and head of household.

The 'head of household' status have many advantages as they receive a lower tax rate and higher standard deduction than the 'single' status.

So, when Julie changed her status from 'single' to 'head of household', her standard deduction will be higher.

Hence, option D is correct.

step-by-step explanation:

30% of $420 is 0.30($420) = $126 and $420 + $126 = $546.

or, 130% of $420 is 1.3($420) = $546.

notice that this is not the $600 original list price with which we started.

why doesn't this work?

the method does not work because 30% of $420 is not the same amount as the 30% of $600. it may seem obvious when stated this way, but it is a very common error made on problems of this type. we cannot just use the same percent and get back to the original amount because we are taking that percent of a different value.

to work problems of this type correctly, it is generally best to write an equation for the situation and then solve.

example: since (100% – 30%)(original price) = (sale price)

70% of the   (original price) is $420.

0.7x   = 420

equation image indicator

x = 600

the original cost was $600.

we may also solve this problem using the two-step method. working the problem in two steps requires us to use more algebra skills. we have to know that x = 1x (identity property of multiplicationtext annotation indicator) and that 1x – 0.3x = 0.7x (subtracting like terms). then we solve the problem as follows:

(original price) – 30%(original price) = sale price

x – 0.3x = 420

0.7x = $420

equation image indicator

x = 600

the original cost was $600.  

note that with both of the above methods we do obtain the correct original amount.

example: after a 5% pay raise, hermione is earning $22,680 per year. what was she earning before the pay raise?

105% of (original salary) = current salary

1.05x = 22,680

equation image indicator

x = 21,600

hermione earned $21,600 per year before the pay raise.

this is an example so maybe you will get how to at least do it!

because 1.2 isnt half of 6 duh