A bus moves away from a bus stop in a straight line. It moves 10 meters by the end of the 1st second, 20 meters by the end of the 2nd second, and 30 meters by the end of the 3rd second. How many meters away is the bus from the bus stop after 10 seconds?

The bus’s distance increases by 10 meters each second: 10 meters after 1 second, 20 after 2, and 30 after 3. After 10 seconds, it will be 10 × 10 = 100 meters from the bus stop, so the correct choice is 100.

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