Final answer:
To find the total distance traveled over three days, each day's mileage—312.75 miles, 250 miles, and 176.5 miles—is added to get a sum of 739.25 miles. Option (d) is the correct answer.
Step-by-step explanation:
To calculate the total distance traveled over three days, you simply add the distances traveled each day together. In this case, the student traveled:
- 312.75 miles on the first day,
- 250 miles on the second day, and
- 176.5 miles on the third day.
Adding these distances together:
312.75 miles + 250 miles + 176.5 miles = 739.25 miles
So, the total distance traveled over the three days is 739.25 miles, which means the correct option is (d) 739.25 miles.