Answer:
1560
Step-by-step explanation:
The rate of Increase of the population (P) of the bacteria is given as:


Where k is a constant of Integration.
At t=0, P(t)=36

Therefore:

Answer:
Ellen invested $60 and Bob invested $140
Step-by-step explanation:
let the two amounts invested by 3x and 7x
(notice 3x : 7x = 3 : 7 )
then 3x + 7x = 200
10x = 200
x = 20
then 3x = 3(20) = 60
and 7x = 7(20) = 140
60+140=200