Riley is saving up to buy a new television. she needs a total of $968.58. riley has saved $200.78 already and earns $76.78 per week at her job. how many weeks does riley need to work to save enough money to buy the new television?

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?