exam Maths Puzzle Numerical Ability

When plotte on the rectangular coordinate system, in which quadrant would the following point be located for this polar coordinate? (-2, 2pi/3)

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exam Other Question
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? Use square roots or factoring to solve the equation.

1/3(x+2)^2= 3/4