Respuesta :
If you meant to put 22 for c, it is c, of not, your question is wrong
Explanation:
7 is 7·1
14 is 7·2
21 is 7·3
28 is 7·4
Explanation:
7 is 7·1
14 is 7·2
21 is 7·3
28 is 7·4