To find the average amount of flour used per day from a 15 lb bag over 4 days, you can follow these steps:
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Total Flour Used: Since the entire 15 lb bag is used over 4 days, the total flour consumed is 15 lbs.
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Average Daily Flour Use: Divide the total amount of flour by the number of days: \[ \text{Average daily flour use} = \frac{15 \text{ lbs}}{4 \text{ days}} = 3.75 \text{ lbs/day} \]
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Rounding: You are asked to round to the nearest hundred, but since 3.75 is less than 100, when rounded to the nearest hundred, it remains 0.
Thus, the average amount of flour in the bag changes each day by approximately 0 lbs when rounded to the nearest hundred.