Bobs family of three was driving to washington d. c.. they were going to stay overnight, sightsee during the next day, and return home in the evening. they had to pay for dinner, breakfast, and lunch. they were to sleep at grandmas house. breakfast at mcdonalds was $4.89 each. lunch at kentucky fried chicken was $5 each. dinner at wendy's was $8.49 each. was $60 enough money to pay for their food? explain

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?