exam Maths Puzzle Numerical Ability

Please help me solve this equatin: f(x)=3x(2x-1).f(-1)=

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exam Other Question

The length of a rectangle is twice the width of the rectangle. The length of a diagonal of the rectangle is 25 cm.

Work out the area of the rectangle. Give the answer as an inte Charlie Consumer's credit card balance on April 1st was $40. On April 7th, he made a $10 payment and on April 25th he charged a $25 item. If his credit card company charges a fina