When a plant or animal dies, it stops acquiring carbon-14 from the atmosphere. The amount y (in grams) of carbon-14 in the body of an organism after t years is-y = a(0.5)*/3730, where a is the initial amount grams). What percent of the carbon-14 is released each year? Round your answer to the
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Plz i want answer and i would appreciate it is is a b c or d

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42