PLEASE HELP WITH TEST

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

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?