John wants to travel to iceland he will need to have $20409, he wants to go in 15 years. how much must he deposit monthly into an account that pays 1.80% compounded interest monthly

Look at attachment. has all info needed. need

$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?