Answer:
t= ((ln*2)/(0.02)
Step-by-step explanation:
plug 40000 in for P and solve for t
40000=20000e^0.02t
-divide both sides by 20000: 2=e^0.02t
-in order to cancel out e, multiply both sides by the natural log (ln)
ln(2)=0.02t
-divide 0.02 on both sides to get t by its self
Answer: t = ((ln(2)/(0.02))