240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

after 240 days.
An 8 sided polygon is, an Octagon
As mentioned before, banks<span> basically make money by lending money at rates higher than the cost of the money they lend. More specifically, </span>banks<span> collect interest on loans and interest payments from the debt securities they own, and pay interest on </span>deposits<span>, CDs, and short-term borrowings.</span>