There are 448 students at westover middle school. a
total of of the students participate in after-school
activities. of those students, do not get home until
after 7 pm.

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