Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and calculations to receive credit. x2 − 4x + y2 + 8y = −4

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Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i