Which statement is correct

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.

Need same math paper but the back now i hope your able to read it cleary i need with hw

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2