HELP! WILL GIVE BRANLIEST!!

Geometry ? i don't know how to do any of these.

Which value of y will make the inequality y< -1 false?

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?