Sandy spent 4% of x hours at her part-time job. what is x if 4% of x is about 22 hours? Explain how you estimated and which property of equality you used to find x. Solve for x x =

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?