You are making necklaces for your friends. you have 54 blue beads and 28 red beads. each friend will recevie an identical necklace, and all beads must be used. what is the greast number of friends who can receive a necklace? explain your reasoning. how many of each color bead will each friend recevive on the necklace? explain your reasoning

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?