In the equation \( s = 25m + 115 \), \( s \) represents John's savings, which is dependent on the number of lawns he mows, represented by \( m \).
When considering the inverse of the equation, we typically exchange the roles of the dependent and independent variables. In this case, when we find the inverse, \( m \) will become the dependent variable, and \( s \) will become the independent variable.
Thus, in the inverse of the given equation, the dependent variable is \( m \) (the number of lawns he has mowed).