Radioactive iodine is a dangerous by-product of nuclear explosions, but it decays rather rapidly. Suppose that the function
R(t) = 6 (10-0.038t) gives the amount in a test sample remaining t days after an
experiment begins. Use logs to find the half-life (1/2 or 50%) of the substance.

Two lines that do not intersect are skew. always sometimes or never

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

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