Sam has 12 black-and-white photos and 18 color photos. He wasn't to put the photos in equal rows so each row has either black-and-white photos only or color photos only. In how many rows can Sam arrange the photos

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