book Maths Puzzle Numerical Ability

can you please help with this question...

Joseph is 4 years older than twice his sisters age. In 4 years time he will be 11 years older than here. How old is Joseph now

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book Other Question

Please help me with this! Determine the quadratic equation for the parabola:
Minimum value is 4 when x=3
zeros of f: one is 6
15 JAN 2015 Quadratic Equation x (x^2+6x+18)(x+6) = 159919
then (x+4)^4 will be