exam Maths Puzzle Numerical Ability

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Factor 6-5b+b^2

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exam Other Question

Martina leaves home at 9 a.m., bicycling at a rate of 24 mi/h. Two hours later, John leaves, driving at the rate of 48 mi/h. At what time will John catch up with Martina? Find the length of the latus rectum of the parabola with an equation
x^2-6x-8y+25

Work so far:

x^2-6x=8y-25
x^2-6x+9=8y-25
(x-3)^2=8y-25