To find the multiplicative rate of change for the exponential function f(x) = 2(5/4)^-x (I am assuming that is what you meant), you would label the necessary key components of any exponential function, which would mean the number outside the parenthesis is the initial value, and the rate of change would be inside the parenthesis. Therefore the rate of change is 5/4. Hope this helps. Please rate, leave a thanks, and mark a brainliest answer (Not necessarily mine). Thanks, it really helps!