What is the test for proving an alleged drug dealer possessed cocaine for sale?

"The prosecution did not prove appellant possessed this cocaine for sale by introducing evidence he actually sold some other cocaine to the confidential informant on a previous occasion. Rather it relied on the quantity of cocaine found in appellant's possession combined with the scales, cutting compound, and other apparatus and supplies he also possessed which are typically associated with cocaine intended for sale rather than for personal use." (People v. Alderrou, supra,

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