GOOD AT GEOMETRY? WILLING TO HELP?? COME RIGHT THIS WAY ALL HELP IS APPRECIATED!! I WILL GIVE YOU 25 PTS AND BRAINLIEST IF YOU HELP. PLEASE DON'T WASTE MY TIME.

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