Answer:
Zero
Step-by-step explanation:
The solutions to a system of equations are where the lines intersect. These lines have the same slope meaning they are parallel. Parallel lines never intersect, therefore there are zero solutions.
10 yards is equivalent to 360 inches.
Answer:
-2x + 12
Step-by-step explanation:
If we call our other expression y, we can set up an equation tying together 3x + 5, y, and 5x - 7:

Solving for y by subtracting 5x - 7 from both sides will get us the expression we're looking for:

So the other expression in the sum is -2x + 12.