Answer:
1)8
2)4
3)5
4)6
Step-by-step explanation:
(1)20/4 = 5(scale factor)
40/5 = 8
(2)56/8 = 7
28/7 = 4
(3)28/4= 7
35/7 = 5
(4)21/3 = 7
42/7 = 6
