A 2-column table with 4 rows. Column 1 is labeled Number of Boxes with entries a, 4, 6, 8. Column 2 is labeled Number of nails with entries b, 88, 132, 176. The table represents a proportional relationship with the number of nails in boxes. What are the unknown values representing the unit rate? a = b =

Ibelieve the answer is c

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.