A medication’s concentration decreases by 12 % in 4 hours
MATHEMATICS · Single correct · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms
Problem
A medication’s concentration decreases by 12\% in 4 hours. Assuming exponential decay, which of the following is the best approximation of the decay constant k (in h−1)?
(a) −0.128
(b) −0.032
(c) 0.032
(d) −0.030