How do u solve this ?

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Triangle knm is what is true about the sides of knm

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?