Wholemark is an intemet order business that sels one popular New Year's greeting card once a year. The cost of the paper on which. the card is pinted is $085 per card, and the cost of prineing is $035 per card The company recelves $360 per card sold since the curds have the current year printed on them, unsold cards have ro savage value lts customers are from the four areas: Los Angeles. Santa Monica. Hollywood, and Pasadena. Elased on pust data, the number of customers from edch of the four regions is nomaly distrbuted wath a mean of 6.900 and a standard deviation 480 . (Assume these four are independent) What is the optimal production quantity for the card? Note: Use Excer's NORM.S INV0 function to find the z value. Round z value to 2 decimol plsces. Round your onswer to the nearest: whole nymber