What is the formula for exponential growth and decay? y=

Remember that the original exponential formula was y = abx. You will notice that in these new growth and decay functions, the b value (growth factor) has been replaced either by (1 + r) or by (1 - r). The growth "rate" (r) is determined as b = 1 + r.

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled