exam Maths Puzzle Numerical Ability

If an earthquake measured 5.9 on the richter scale, what was the intensity of the earthquake? Neeed to use the formula M=log(A/Ao).

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exam Other Question

The planning department of Abstract Office Supplies has been asked to determine whether the company should introduce a new computer desk next year. The department estimates that $1 2 - 4x + 7x + 8 < 6x - 5x