Answer:
(E). 19
Step-by-step explanation:
Let original population of each colony be P.
We have been given that a certain bacteria colony doubles in size every day, so bacteria colony is growing exponentially. After x days, the population of bacteria would be:

The population after 19 days will be
for each colony.
The total population of both the colonies at that point will be
which is what the habitat's limit is.
Therefore, it will take 19 days for two bacteria colonies to reach the habitat's limit and option E is the correct choice.
Answer:
169
Step-by-step explanation:
divided = divisior * quotient + remainder
so d = 13*13
= 169
Answer:
2x + 3y = 6
Step-by-step explanation:
2x + 3y = 6
-2x. -2x
3y/3 = -2x + 6/3
Y = -2/3x + 2
Answer:
As what you described, you have done quite well.
Until last step, there would need a simplification of 6/45.

=> Option B is correct.
Hope it helps!
:)