It is 420,5040,840 and 1680 is divisible by 2,3,4,5 &6.
Answer:

Step-by-step explanation:
5x4+20x3-105x2
5x2( x^2 +4x -21)

1/6 = 10 minutes
10 minutes six times =1hour
1/8 x 6 =3/4
Well an axis is like the whole line, so I would think its A, hope this helps.