Is the function below exponential?

q(r)=−8/3^r
If so, write the function in the form q(r)=ab^r and enter the values you find for a and b in the indicated blanks below. If the function is not exponential, enter NONE in both blanks below.

a=-8
b=??

-8/3^r = -8 * (1/3)^r

Yes, the function q(r) = -8/3^r is exponential.

To write the function in the form q(r) = ab^r, we can assign:
a = -8
b = 3

Therefore, the function can be written as q(r) = -8 * 3^r.

To determine if the function q(r) = -8/3^r is exponential and write it in the form q(r) = ab^r, we need to compare the given function with the general form of an exponential function.

An exponential function can be written as q(r) = ab^r, where:
- q(r) represents the output or dependent variable,
- a represents the initial value or the value of the function when r is 0,
- b represents the base or the constant factor by which the independent variable r is multiplied.

In the given function q(r) = -8/3^r, we can see that a = -8, as it is the initial value. However, for the function to be exponential, the base, b, must be a constant factor by which the independent variable, r, is multiplied.

In this case, the base is 3 raised to the power of r, which means it is changing with r. Therefore, the function q(r) = -8/3^r is not an exponential function.

Thus, the values for a and b are NONE, as there is no constant base, b, in this function.