exam Maths Puzzle Numerical Ability

if P(4,-5) is apoint on a graph of the function y=f(x), find the corresponding point onthe graph of y=2f(x-6)

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exam Other Question

Calculate log 4235 to four decimal places. the length and width of a rectangle are in the ratio 3:2. if the length is increased by 20 and the width is decreased by 5, the ratio of the length to the width becomes 2:1. find the length and width of this rectangle.