“Three decimal places” is the same as “the nearest thousandth.” So, for example, if you are asked to round 3.264 to two decimal places it means the same as if your are asked to round 3.264 to the nearest hundredth. Some questions, like the example below, will ask you to “show your answer correct to two decimal places."
A because x is the original price, so you multiply by the tax (9%) which would convert to 1.09 which you would multiply to the x
The age of uncle as compared to kavya is 35
$299 and $199 adds up to 498, including the tax rate 7.5% and your total is $535.35
