What is the equation for exponential decay? Calculus Applications of Definite Integrals Exponential Growth and Decay Models 1 Answer Wataru Sep 20, 2014 The equation of exponential decay has the form #Q(t)=Q_0e^{-kt}#, where #Q_0# is an initial value and #k# is a positive constant. Answer link Related questions What is the differential equation that models exponential growth and decay? How do you Find the exponential growth function that models a given data set? What are exponential growth models? What is the exponential model of population growth? How do you Find exponential decay rate? How do you Find exponential decay half life? How do you graph exponential decay? How do you find the equation of exponential decay? How do you use the exponential decay formula? What does exponential decay look like? See all questions in Exponential Growth and Decay Models Impact of this question 1720 views around the world You can reuse this answer Creative Commons License