Which of the following illustrates the truth value of the given conditional statement?

the number -343/9 is an integer, and a rational number.

f t → f
t f → f
t t → t
f f → t

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