The appropriate statement regarding the end behavior as \( r \) increases is:
The end behavior as \( r \) increases is \( t \) approaches 1.
It represents that as the rate increases, the time it takes to travel 20 miles decreases and approaches 1 hour.
Explanation:
Given the function \( t = \frac{20}{r} \), we can observe:
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As \( r \) (the rate in miles per hour) increases, \( t \) (the time in hours) decreases because you are covering the same distance (20 miles) at a faster speed.
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To clarify the time conversion, 1 hour is equivalent to 60 minutes, so \( t \) approaching 1 hour is the correct interpretation.
Therefore, you might want to correct your original statements to reflect these points about the relationship accurately.