Please help me with this question

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

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

How is the number of vertices for a prism related to the name of the prism