exam Maths Puzzle Numerical Ability

CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM;

What are the coordinates of the apex of:
(f^og)(x) if f(x)= x^2 +4 and g(x)= x-3

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exam Other Question

0.2,0.4,0.15,0.24,0.09

RANK IN ORDER OF LOWEST TO HIGHEST
Simplify. Leave in Radical Form.

square root of 5n^5/4m^5