Question: 4. Express as a single logarithm /4 -log x + - log y - 4log z 5. Carbon-14 is used by scientists to estimate how

4. Express as a single logarithm /4 -log x + - log y - 4log z 5. Carbon-14 is used by scientists to estimate how long ago a plant or animal lived. The half-life of Carbon-14 is 5730 years. A particular animal contained 200 grams of carbon-14 at the time that it died. /10 a) How much carbon-14 would remain after 5730 years? b) Write an equation to represent the amount of carbon-14 that remains after t years. c) After how many years would 120 grams of carbon remain

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