Answer:
The restriction that would be made to the range is; the amount of money spent on lunch is less or equal to 5 dollars.
Explanation:
The range in this case refers to the possible values the function may assume. Since 5 dollars is spent everyday then the constraint imposed on the amount of money spent for lunch would be as given above. This is because the individual can only spend up to 5 dollars on lunch each day since this is the amount available for daily expenditure.