2. Moore has 20 songs. His friend bought him M more songs. Write an expression that shows how many songs
Moore has now.

Ineed with number 6 , explain how to get 1978

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

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