Which function is not an example of exponential decay? 1: y = 0.5(3) x
2: y = 3(0.2) x
3: y = 0.2(0.5) x
4: y = 2(0.4)

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days