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.

More can be learned about exponential functions at link

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

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