What goes in the three blanks?

1. the following set of data represents the number of waiting times in minutes from a random sample of 30 customers waiting for service at a department store. 4 5 7 10 11 11 12 12 13 15 15 17 17 17 17 17 18 20 20 21 22 22 23 24 25 27 27 31 31 32 a. determine the number of classes and class interval.

Will mark brainliest. when ∆rst is translated 4 units down, what are the apparent coordinates of t’?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?