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Which cube root function is always decreasing as x increases?
CU
Of(x) = 3/7-8
Of(x) = 3-5
O f(x) = 3-(5 - x)
O f(x) = -3/7+5

10 points? me . its important ‼️‼️

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.