There is a book sale at the libaray the price for each book is $4 which expression can be used to show how much money the library will make if it sells 289 books? use the number on the tiles to complete your answer.

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?