Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease.
y=
21(0.97)
^x

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%