Decide if the function is an exponential growth function or exponential decay function, and describe its end behavior using limits. y=7^-x

Using limits, it is found that since , it is an exponential decay function, as it starts at infinity and ends at 0.

An exponential function is modeled by:

.

Then:

In this problem, the function is:

Hence:

Hence, it is exponential decay, as it starts at infinity and ends at 0.

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