exam Maths Puzzle Numerical Ability

<img src="http://img137.imageshack.us/img137/5523/mathhrt5.png">
please help me i dont know even where to start
there werent any directions
but im guessing i have to solve for

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exam Other Question

Expand and simplify: ln(xe)
All the sample problems have ln(ex) so is there a difference when the two letters are reversed? Thanks so much! it says write an equation for a hyperbola with vertices at (0,7) (0,-7) and foci at (0,9)(0,-9)