Is the function ƒ(x) = (–7)x an exponential function? if so, identify the base. if not, why not? a. no, the constant raised to a variable exponent is negative. b. yes, base = –7 c. yes, base = 7 d. no, there is no constant raised to a variable x.

A. no, the constant raised to a variable exponent is negative.  the base (the constant) of an exponential function has to be positive.there's problems with having a negative base (when working with real numbers).for example, if  , then we'll have    which is not a real number.

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