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The technical support desk at a college has set up a unique service for tablets. A survey shows that of tablets on-campus run Apple's iOS, run Google's Android OS, and run Microsoft's Windows. Assuming that users of each of the operating systems are equally likely to call in for technical support, what is the probability that of the following three calls:
a) All are iOS?
b) None are Android?
c) At least one is a Windows machine?
d) All are Windows machines?
Marshall Industrial Supply offers terms of 2/10, n/30 to its wholesale customers. Marshall’s cost of goods sold is 30% of sales. The company had the following transactions during October:
October 1 - Sold $8,000 of merchandise to Pez Co. on account.
October 3 - Sold$1,000 of merchandise to Omaha Corporation, who paid by credit card. The credit card company charges Marshall a fee of 2% on credit card sales.
October 7 - Sold $32,000 of merchandise to Magnolia Company on account.
October 8 - Pez paid the balance of what it owed for the purchase on October 1.
October 12 - Sold$17,000 of merchandise to Wexler Enterprises on account.
October 16 - Magnolia paid the balance of what it owed for the purchase on October 7.
October 31 - Wexler paid the balance of what it owed for the purchase on October 12.
Record Marshall’s transactions, including the cost of goods sold entry for each sale.
Calculate the net sales revenue for the month.