Decide whether each of the following statements makes sense (or is clearly true) or does not make sense (or is clearly false). Explain your reasoning.

A toxic chemical decays with a half-life of

11

years, so half of it will be gone

11

years from now and

then half of what remains will be gone 11 years after that

.

The statement

Makes sense OR doesn't make sense? ______

because after

22

years, the toxic chemical will decay to an amount equal to

2, 0.25, OR 0.5? ______

times the original amount.