To calculate how many inches are in 2.5 miles, we can follow these steps:
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Convert miles to feet: \[ 2.5 \text{ miles} \times 5,280 \text{ feet/mile} = 13,200 \text{ feet} \]
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Convert feet to inches: \[ 13,200 \text{ feet} \times 12 \text{ inches/foot} = 158,400 \text{ inches} \]
Therefore, there are 158,400 inches in 2.5 miles. The correct answer is:
158,400 inches