Label each point on the number line with the correct value. Click each dot on the image to select an answer. Choices:
-0.1
2
12
a
b
с
+
3
8
+100
0
.
100
8

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.