What is the mean of this sample which consists of 10 values randomly selected from the table?

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

With finding limits of multi variable !

Find the average rate of change for the given function drom x=1 to x=2