Help me with this pls for 10 point and bright if right

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.

What is x3+3x2−16x−48 divided by x−1?

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?