Can someone help me with this?

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

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

With both problems. a.s.a.p directions on photo ^