7(x - 4) - 3(x + 5)
Distribute the 7 and 3
7x - 28 - 3x - 15
4x - 43
Length:12 cm
Width: 7 cm
My work is shown in the picture. I hope this helps!
Let's say "c" is a constant, hmmmm any constant, for any value whatsoever of "x", "y" is always that constant, for example, say c = 3, thus y = 3, so a table for it will look like

now, if you plot those points, it'd looks like the picture below.
Answer:
x+3 = x+3
Step-by-step explanation:
No matter what you plug into x, both sides will be the same.