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Discover Questions

How could galaxies process integrate so many stars one at a time? A quadratic function f(x)=ax^2+bx+ c has a maximum point at (2,20) and cuts the y-axis at y=8. Find the values of a, b and c? Is D(x,y) to (4x,y) a dilation? And if it is, is it from the origin? I just started learning this, please help.? How is a participant's life a math club? Whats the domain of f -1(x)?