exam Maths Puzzle Numerical Ability

Please simplify.
5x^2-20/3x^2+5x-2

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exam Other Question

You knew it was coming, didn�t you? Problem 22 asks you to graph the given function. Example 5 on p. 657 provides a good model to go by�.
22) f(x) = -2x - 5
curved surface area of a right circular cylinder is 4.4 meter square. if the radius of the base of the cylinder is 0.7m find its height.