Kali runs 10 laps around a track each day each lap around the track is 400 m how many days will it take me to run a total of 12

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days