9514 1404 393
Answer:
$1524
Step-by-step explanation:
The basic idea is that each line of the table is use for that portion of the income that falls in the range for that line of the table. Then the tax amounts are added together.
Another way to do it is to rewrite the table to use the full tax rate on the full income, then subtract a "discount" applicable to that line. Using that method in the attached spreadsheet, we have computed the tax to be $1524 on income of $30,000.
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Additional comment
The above-described calculation is applied on each line of the table to arrive at the "tax" on that line. The amount due is the maximum of the numbers in the "tax" column. (Doing this by hand, one would only need to use the formula on the one applicable line. In a spreadsheet, the extra calculations are of little consequence.)
We have used 1e8 as an "upper limit" essentially equivalent to "infinity" for the purpose here.
