The bacterium, cholera, reproduces at an exponential rate which can be modeled through the continuous growth model. If the value for k is 1.38 and we initially start with 2 bacteria, what is the equation for cholera growth, where t is the number of hours? A. At = 2e1.38×t

B. At = 2e1.38×2t

C. At = –2e1.38×t

D. At = 2e–1.38×t

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?