HEL! The function y = 6x describes the distance in inches an electric toy train covers after x seconds. Use the graph to estimate how many inches the toy train will run in 8.4 seconds.

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?