book Maths Puzzle Numerical Ability

How does one find the particular equation of a quadratic function that passes throught the points (1,4), (-3,32), and (4,25)?

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book Other Question

a motorcycle breaks down and the rider has to walk the rest of the way to work. the motorcycle was traveling at 45mi/h, and the rider walks at a speed of 6mi/h. the distance from h I am totally lost on this. Please help!

Write the first 5 terms of the sequence a(n)=n^2+1

Thanks in advance