Answer:
1. yes
2. 3
3. 1x
4. y=1x+3 or y=x+3
Step-by-step explanation:
If you do 4/7 divide by 2 the answer is 0.2857
I believe the answer is 240.
8000 * .03 = 240
Lets make the graph of our systems of equations:
The blue line correspond to the equation x-y=3 and the red one correspond to 7x-y=-3. The lines intersect at point (-1,-4), then, the solution of the system is (-1,-4).