Which functions are examples of exponential growth?
a) f(x) = 5^x
b) f(x) = (1/2)^x
c) f(x) = (1/2)^-x
d) f(x) = 3^-x
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A. `f(x)=5^x` example of exponential growth
C. `f(x)=(1/2)^(-x)=(2^(-1))^(-x)=2^x` example of exponential growth.
other two are examples of non-growth.
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