Candy selling at $6.00 per pound will be mixed with candy selling at $8.00 per pound. how many pounds of the more expensive candy are needed to produce a 15-pound mixture that sells for $7.00 pero pound?

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?