The exponential equation in its generic form is: y = A * (b) ^ t Where, A: initial amount b: base (Growth rate for b> 1. Decrease rate for b <1.) t: time. We have then that the equation is: N = 40.25 (1.0394) ^ t The base is: b = 1.0394> 1 (it is a growth rate) Answer: The base, b, of the exponential model is: b = 1.0394 the base is a growth rate
