Final answer:
Joey walked 10/4 miles, which simplifies to 2.5 miles. Therefore, the answer is A) 2.5 miles.
Step-by-step explanation:
Joey walked 10/4 miles to his friend's house. To determine which of the provided options best represents this distance, we need to simplify the fraction. The fraction 10/4 can be simplified by dividing both the numerator and the denominator by their greatest common divisor, which is 2 in this case. This gives us 5/2. The fraction 5/2 is equivalent to 2.5 when converted to a decimal. Therefore, 2.5 miles is the best representation of 10/4 miles.
The correct answer to the question is A) 2.5 miles.