If r=5(12,80) what the given radius and center

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?

If bill bought a home for $210,000 and he sold it a year later for $120,000 his percentage of loss is

Convert the density of surface sea water to metric tons/cubic meter