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Grade 12 Exponents CCSS: HSA-SSE.B.3, HSA-SSE.B.3c
Working with half-life of radioactive isotopes, scientists sometimes use the expression N0(12)th, where N0 is the original amount of the substance, t is the time , and h is the half-life of the substance in question. Rearrange the expression 2(57-5t) / 19 to find the approximate half life of RN-222 (in days).
- h=3.8 days
- h=0.3 days
- h=19 days
- h=5 days