Given:
Initial mass, m₀ = 23 g
Decay constant, k = 0.13
Exponential decay obeys the equation

where t = time, days
For half life, the mass is m = m₀/2.
Therefore

Answer: The half life is 5.33 days
4 over 5 is the correct answer
Answer:
$45
Step-by-step explanation:
(25*1)+(4*5)=
25+20=
45