Final answer:
To estimate the tip by rounding the bill to the nearest ten dollars, round the bill amount to $930.00 and calculate 20% of $930.00 to get an approximate tip of $186.00.
Step-by-step explanation:
To estimate the amount of the tip by rounding the bill to the nearest ten dollars before calculating, we first round the bill amount of $925.72 to the nearest ten dollars, which is $930.00. Then, we calculate 20% of $930.00 by multiplying it by 0.2. The approximate amount of the tip is $186.00.
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