Answer:
decay: a, b
growth: c, d, e, f
neither: g
Explanation:
A function is exponential if it has the independent variable in an exponent. g(x) is a linear function, not an exponential function.
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An exponential function is a growth function if the coefficient of the variable is positive and the base of the exponent is greater than 1. It is a decay function if the exponent is positive and the base is less than 1.
The first two functions are decay functions. The remaining four exponential functions are growth functions.