Which cube root function is always decreasing as x increases?

The cube root function, ∛x, increases as x increases. In choice A, it is multiplied by −1, so its values move in the opposite direction: −∛x + 5 always decreases as x increases. Choices B and C are shifts of ∛x, and choice D simplifies to ∛(x − 5); these all remain increasing.

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