exam Maths Puzzle Numerical Ability

1. Evaluate the function: F(x)=(2-x)/x+4 at the point x=-3.

2. Find the equation of the vertical line through the point (2,-1)

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exam Other Question

4. If the ladder is 15 feet long and the height of the building is 12 feet the how far from the building should the ladder be so that the top of ladder touches the top of the building. can you help me find the inverse of the function g(x)= 4/(x-3)