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College Algebra

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Annual profit in thousands of dollars is given by the function, P(x) = -.1x^2 + 50x - 300, where x is the number of items sold , x >= 0.
1.describe the meaning of the number -.1 in the formula.
2.describe the meaning of the number -300 in the formula.
3.find the profit for 5 different values
4.will this profit function have a maximum, if so, what is it?
5.what steps should the company take to prepare for the answer to part 5.

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    The volume V of a sphere of diameter d. To find the volume (the output), take the cube of the diameter (the input), then multiply by ð and divide by 6.

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