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Find the missing value for the radioactive isotope. (Round your answer to two decimal places.) Half-life Initial Amount After Isotope (years) Quantity 1000 Years 14c 5715 22.5 g gWrite an algebraic expression that is equivalent to the given expression. sin(arctan(x)) E Sketch the graph of the function. (Include two full periods.) 4 y = - sec x 5 3 1 -2x -2 -1 -3 -3 -5 -5 5 1 X -2x -1 -3 -3 -5 -5