Quantity x is greater than 10 and less than 20

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Identify one charcteristic of exponential growth

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?