Chemistry: Radon-222 is a gas that escapes from rocks and soil . It can be dangerous for people when it accumulates in buildings. Radon-222 decays to polonium and eventually to lead. Radan 222 Decay 12 1 So 10.500 29 What is the y-intercept? 40 10:4159 14429 bu mzupna po ungary 30 Write the domain shown in the graph as an inequality? 200 100 31 Write the range shown in the graph as an inequality? 1 -5 2 Time dar) 32 What is the dependent variable? ​