F(x)=x^6+5x^5-x^3+x-6 divided by x+1

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.

I'm not sure you can get negative in holes, but in the case of -3+5=2the total is 2.

21 is 24 minutes, 22 is 20 and 23 is 18. tell me if anything is wrong.