exam Maths Puzzle Numerical Ability

Find the circumference of a circular swimming ppol with a 6 foot radius (use pie = 3.14)

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exam Other Question

If F(x)= 3X to the 3rd power -6X to the 2nd power - x + 7, what is the value of f(2) + f(-2)?

This question is multiple choice, it is either A. -34, B. 0, C. 2, D. 7, E. 14
2x2-6x+12