exam Maths Puzzle Numerical Ability

The pressure P of a gas at constant temperature varies inversly as the volume V. If V +600 inches cubed when P+45 lbs/inches squared, what is P when V+ 54 inches cubed?

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exam Other Question

Find the equation of the line through (-1,-7) having a slope of -6. what is the range for the function {(1,3),(5,7),(9,11)}