Which set of ordered pairs is not a function?
O
{(0,0), (1,1), (2,2), (3,3)}
O {(1,2), (3,4), (4,5), (5,6)}
O
{(4,1), (5,1), (6,1), (7,1)}
{(3,1), (2,1), (1,2), (3,2)}

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