13 The volume of chlorine, C litres, in a swimming pool at time t hours after it was placed in
the pool can be modelled by C(t) = C0ekt, t ≥ 0. The volume of chlorine in the pool is
decreasing. Initially the volume of chlorine in the pool was 3 litres, 8 hours later the
volume was 2.5 litres.
a State the value of C0.
b Find the exact value of k.
c Exactly how many litres of chlorine were present in the pool 16 hours after the
chlorine was added to the pool?
i need help on c. how would i do this question.
i sub t=16, Co=3 in the equation but do know what to do next.