What is the distance between the points (3, 4) and (3, -7) ———————————————
A:6 units
B:7 units
C:10 units
D:11 units

Anyone know? will mark brainliest if correct!

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

Ineed to know the answer to this algebra question.