Element X decays radioactively with a half life of 10 minutes. If there are 960 grams
of Element X, how long, to the nearest tenth of a minute, would it take the element to
decay to 20 grams?

Answer this question only if you know the answer! 30 points and

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

What is the least common multiple for 6 and 8? what is the least common multiple for 4 and 12 ? what is the least common multiple for 11 and 12? what is the least common multiple for 3 and 6?