Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:
given ,

Also ,

substituting the value of x in the value of ZH , we get

hope helpful~
3x+12=6 will give you x=2
And
-2=4-3x will give you x=-2
Answer:
Population of bacteria at time
is 
Step-by-step explanation:
The complete question is
If
represents the number of bacteria in a culture at time t, how many will there be at time 
Solution
Given
The population of bacteria after time t is equal to 
Population when at time 
We will substitute the value of time in above equation.

1. 5+4
2. 7+2
The answer is 9.
I hope I helped! :)