exam Maths Puzzle Numerical Ability

these logs confuse me.

Use properties of logarithms expand the logarithmic expression as much as possible.

logv2(7 . 11) V=down arrow

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exam Other Question

Can you please help me find the inverse function of the given function.
x^3+39x^2+507x
Consider the function f(x)=x^2+6x-2.

Find h, the x-coordinate of the vertex of this parabola.

Answer:

Show your work.