Final answer:
The dog traveled a total of 7 miles during the 45-minute period by adding the initial 2 miles and the additional 5 miles together.
Step-by-step explanation:
The student asked how far a dog traveled in total during a 45-minute period if the dog initially traveled west for 2 miles and then continued in the same direction for an additional 5 miles. To find the total distance traveled by the dog, you simply add the two distances together. The equation would be:
2 miles + 5 miles = 7 miles
Therefore, the answer is 7 miles (Option C).