Choose the missing step in the given solution to the inequality −x − 3 −4

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Which inequality has a dashed boundary line when graphed ?

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g