Answer: 
Step-by-step explanation:

Add 4 to both sides


Divide through by 7


Therefore :

Answer:
After multiplication number will be 
Step-by-step explanation:
We have given numbers which has to multiply using scientific notation
That are 
We have to multiply the above number using scientific notation
We know that when two number are multiplied then there exponent power is being added
So when we multiply
there power will be added and after multiplication number will be 
Answer:
A. (the vertical scale)
2nd part is the Bottom graph
Step-by-step explanation:
It would be 10.
Reason:
5x1= 5
5x2=10
5x5=25
5x20=100