What is the least common multiple of 3 and 2?

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

Which one ? is the answer and how to find this answer

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined