The school office uses r reams of white paper and 3 reams or blue paper every day. use the distributive property to wrote and simplify an expression for how much paper the school office uses in 5 days

Ibelieve it's a. 2.2 - x = -10.85 (plz tell me if it's right : ) )

The first graph is the answer

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.