What are the coordinates of the vertex of the parabola described by the equation below? y = -4(x - 3)2 + 5A.(5, -3)B.(3, 5)C.(-3, -5)D.(-5, 3)

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

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