exam Maths Puzzle Numerical Ability

consider the function: f(x)= x^2+6x-2. Find h, the x-coordinate of the vertex of this parabola.

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exam Other Question

Find the distance between each pair of points

(-3, 0) (4, 0) Please help me with this:
It asks to have the inequality solved and to state and graph the solution set???
x/x-3<=-8/x-6 HELP PLEASE!!!