Answer:
$3267
Explanation:
You want to know the taxes on a house assessed at $121000 if the taxes on a house assessed at $110000 are $2970.
Proportion
The taxes are proportional to the house value, so if the house value goes up by a factor of 121000/110000, so do the taxes. The taxes will be ...
(121000/110000)·$2970 = $3267
The taxes on the house with an assessment of $121,000 are $3267.
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Additional comment
You could go to the trouble to find the tax rate, which is ...
rate = $2970/$110000 = 0.027
This can be described as 27 mils, 27‰, or $27 per thousand.
Multiplying this rate by the higher assessed value shows the taxes are ...
0.027 × $121000 = $3267
We don't really need to know the tax rate. All we need to know is that the house with the 10% higher value will have 10% higher taxes.