The answer is infinite (0=0).
1. Use distributive property to multiply the parentheses. You’ll end up with 5z+12.5=5z+12.5.
2. You’ll notice the equation equals each other. 5z-5z equals zero, same for 12.5.
Answer: B) one
This one point is point U since it is on line segment CD. In contrast, a point like point E is not on line CD, so E is not collinear with C and D.