Final answer:
Using a system of equations, we find that the restaurant sold 175 hotdogs and 525 hamburgers, which is not listed in the given options.
Step-by-step explanation:
The student's question involves solving a system of equations to determine how many hotdogs and hamburgers a restaurant sold. Let's define two variables: let x represent the number of hotdogs and y represent the number of hamburgers sold. According to the information provided, the restaurant sold 350 fewer hotdogs than hamburgers, which can be written as x = y - 350. Additionally, we're told that the restaurant sold a total of 700 hotdogs and hamburgers combined, which gives us a second equation: x + y = 700.