A 45 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1474. N = Noe -kt No = initial mass (at time t = 0) N = mass at time t - a positive constant that depends on the substance itself and on the units used to measure time t = time, in days find the substance's half-life, in days.
Round your answer to the nearest tenth​