Answer: 
Step-by-step explanation:
Reformatting the input :
Changes made to your input should not affect the solution:
(1): Dot was discarded near "7.".
<u>STEP 1: </u>
Simplify 
<u>The equation at the end of step 1:</u>

<u>Multiplying exponential expressions:</u>
2.1
multiplied by

Final result is 
When the lines are parallel then there is no solution to the system of equations.
This happens because the intersection is the solution. And when there is no intersection then there is no solution.
The third one because its the only one decreasing
700, because 8 is 5 and up so it'll be rounded up.
Answer:
what is the full question