How do you determine if an exponential formula is growth or decay? Algebra Exponents and Exponential Functions Exponential Decay 1 Answer Wataru Nov 12, 2014 f(t)=Ce^{kt} is an exponential {("growth if " k>0),("decay if " k<0):}. I hope that this was helpful. Answer link Related questions How do you graph exponential decay functions? What is the exponential decay formula? How do you graph y=(\frac{1}{5})^x? How do you create an (x,y) table for y=\frac{3}{4} \cdot 6^{-x}? How do you know if y = 2.5(0.8)^x represents exponential growth or decay? How do you determine the value of an x-ray machine after 5 year if it cost $216 thousand and... What is the growth factor, initial amount for M(t)=8(2)^(1/6t)? What is the difference between the graph of a exponential growth function and an exponential... Is the function y = -5(1/3)^ -x exponential growth or decay? The value of a car decreases at an annual rate of 9.9%. It is currently worth $15000. When... See all questions in Exponential Decay Impact of this question 4430 views around the world You can reuse this answer Creative Commons License