Explain how to solve 5x − 2 = 8 using the change of base formula log_b of y = log y / log b. include the solution for x in your answer. round your answer to the nearest thousandth.

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?