X= 0, 1, 2, 3 ,4 y= -5, 0, 7, 16, 27 Which of the following equations is consistent with the information in the table above?
A) y= 4x - 5
B) y=2x2 + 4x – 5
C) y=x² + 5x – 5
D) y=x² + 4x-5

Planet earth has a mass of 5.9726x10²⁴ kg.then: 5.9726x10²⁴ kg=100% of the total earth mass.if the water´s mass=5x10-4 % of the total mass, we can solve this problem by the rule of three.5.9726x10²⁴ %*10⁻⁴ %x=(5.9726x10²³ kg)(5*10⁻⁴  %) / 100 %=2.9863x10¹⁹ kganswer:   the mass of the planet´s water would be   2.9863 x 10¹⁹ kg.