Answer: There are n = a/7 pretzels into each bag.
Explanation:
The options are missing, but ill try to explain it anyways.
Suppose that Sydney has pretzels, where a is an integer number.
If she puts the same number of pretzels into 7 bags. then we must divide an into 7 equal parts, then the amount of pretzels that go into each bag is
n = a/7