exam Maths Puzzle Numerical Ability

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2ax+bx-6ay-3by-bz-2az

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exam Other Question

Landscaping: Decorative Moon Rocks cost $92 per cu yd. What will be the cost of a conical pile of this rock 3 1/3 yd in diameter and 2 1/4 yd high? Round to the nearest dollar? x^2-12x-45=0