exam
Maths Puzzle
Numerical Ability
Given f(x) = 3 x+8 and g(x) = sqrt(x+3), find f � g(4) and g � f(4), giving exact answers (using sqrt if necessary).
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Subtract
4x� +2x� + 4x� from
4x� + x -3x�
if y varies directly with x, and y=44 when x=4 find the constant of variation k
