exam Maths Puzzle Numerical Ability

P(x) = -.2x^2 +300x-200. What is the profit if 500 are sold? What value of x will the profit be at a maximum?

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exam Other Question

Right triangle ABC has legs with lengths 19 and 95 units. The triangle is to be rotated in space about one of its three sides. What is the maximum possible volume of the resulting When plotte on the rectangular coordinate system, in which quadrant would the following point be located for this polar coordinate? (-2, 2pi/3)