Which expressions represent exponential decay? Choose three correct answers.

An exponential expression represents decay when its variable is in the exponent and its positive base is between 0 and 1. In A, the base is 0.3; in C, it is 0.05; and in G, it is 0.9, so all three represent exponential decay. Bases greater than 1, such as 1.2 in F, represent exponential growth instead.

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