PLS HELP THIS IS DUE TODAY WILL GIVE BRAINLIEST

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.

For what values of x is x2 + 2x = 24 true?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.