13. x > 30
28
29
30
31
32

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Which expression is equivalent to -5(3x - 6/7)

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25