PLEASE HELP ILL GIVE BRAINLEST AND THANKS I NEED THIS QUICK which point is a solution to the system of linear inequalities? {2x+y ≥3 / y ≥ -2x*1} (1,1) (1,0) (0,1) (0,0)

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?