Answer:
23.0 will be your answer.
Explanation:
When you round to the nearest tenth, you go one decimal place past the decimal. This is the number that will be rounded up or stays the same.
Then we go to 1 decimal place past that one. This number determines if the number will round up or stay. If the number is 5 and greater, then it will make the number before round-up. If the number is 4 or less, then the number will stay the same.
In this case, the 8 will make the 9 round up, resulting in the 9 become a "10", and that one gets added to the 2, or the next digit to the left.
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