Final answer:
The repeating decimal 1.16301630... can be written using bar notation as 1.1630.
Step-by-step explanation:
The repeating decimal 1.16301630... can be written using bar notation as 1.1630. This is because the pattern of the repeating digits is 1630, and the bar is placed over these digits to indicate that they repeat indefinitely.
Therefore, the correct answer is: A. 1.1630
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