I’M Not Understanding How To Get To The Answer For #14 The Answer Is There I’M Just Not Sure Which Equation To

dN/N=-kcdt
integrating results into
ln N=-{kc} from t=0 to t=.999 of an hour
ln n=(4*0.2)^(.999×60)
N=1000000X1.26 1.26 x 106 Part b
Time will be
dN/-kct=dt
integrating gives t=0.143 hours roughly…Engineering Technology