exam Maths Puzzle Numerical Ability

Find the slope of the line passing through the points (-9,-1) and (-2,-1)

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exam Other Question

Will you please help me find the inverse of this function?

g(x)= ^3 sqrt(x-2)

I have tried to solve it and this is how far I have gotten:

g(x)= ^3 sqrt(x-2)
y= ^3 sqrt(x- A jar contains 5 white, 7 blue, and 8 red marbles. If you remove 1 marble at a time, randomly, what is the minimum number that you must remove to be certain that you have at least 3 marbles of each color?