Determine if the function is an exponential function. If so, identify the power & base, then evaluate for x = 4 x=4 x = 4 . f ( x ) = ( − 2 ) x f\left(x\right)=\left(-2\right)^{x} f ( x ) = ( − 2 ) x

Hey, everyone. In this problem, we're asked to identify if the function is an exponential function. And if so, then identify both the power and the base and evaluate for x equals 4. Now the function I have here is f of x is equal to negative 2 to the power of x. Now the very first thing that I notice about this function is that my base is negative 2. It is this negative number. Now we just learned that our base has to be a positive number, so this already tells me that this is not an exponential function. And since it's not an exponential function I don't have to worry about figuring out anything else here. Thanks for watching and I'll see you in the next one.