exam Maths Puzzle Numerical Ability

simplify and state the excluded values
(x^2+x-12)/(60-5x-5x^2)

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exam Other Question

What is the y value of the y-intercept for the graph of the equation

-4x+5y=9?

Is it 9/5 A 120-gallon tub has a drain which, when open, drains water at the rate of 6 gallons per minute. If the tub is empty and the drain is open, at what rate, in gallons of water per minute, must water be added to the tub so that it fills in exactly 1 hour?