exam Maths Puzzle Numerical Ability

Will some please help me out with these problems. I have been working on them for days. I dont understand it.

2) Describe the transformations on the following graph of f(x)=e^x

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exam Other Question
Graph f(x)=x+2-5 Give the vertex of this V-graph

~+ means absolute value!! Find the exact length of the altitude to the hypotenuse of a right triangle with legs 10 and {{{8sqrt(3)}}}.