Answer:
4 x n = c or 4n = c
Explanation:
you would do 4 x n because there is 4 dollars each and you do not know how many notebooks there are and each means mutilpy and you would do = c because that is the cost or the whole you paid .
c = 4n
Amy purchases n notebooks, and each costs 4, so 4n represents that.
4.3m questions
5.6m answers