exam Maths Puzzle Numerical Ability

Find all the numbers for which the rational expression is undefined:
q^3-8a/q^2-64

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exam Other Question

Two cars are 10 miles apart going in the opposite direction. If one car goes 50 mph and the other 60 mph; how far will they be in two hours? Hat sizes are determined by measuring the circumference of one's head in either inches or centimeters. Use ratio and proportion to complete the following table.
Hat Size
7 1/2 r