Do you know the answer to this math question it's a photo

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.

The area of square garden is 300m squared. how long is the diagonal?

The function show two sisters' savings account and the rate at which they plan to deposit money