PROPERTIES OF LIGHT CHAPTER 1
15. We can see objects in a bright room because:
(a) the objects give off light lo the air
O the objects reflect the light falling on them
(c) the objects send light away from our eyes
(d) our eyes give off light to the objects

Needs to schedule the staffing of the center. it is open from 8am until midnight. larry has monitored the usage of the center at various times of the day and determined that the following number of computer consultants are required: time of dayminimum number of consultants required to be on duty8 am-noon4noon-4 pm84pm-8pm108pm-midnight6 two types of computer consultants can be hired: full-time and part-time. the full- time consultants work for eight consecutive hours in any of the shifts: morning (8am- 4pm), afternoon (noon-8pm) and evening (4pm-midnight). full-time consultants are paid $14 per hour. part-time consultants can be hired to work any of the four shifts listed in the table. part-time consultants are paid $12 per hour. an additional requirement is that during every time period, there must be at least two full-time consultants on duty for every part-time consultant on duty. larry would like to determine how many full-time and part-time consultants should work each shift to meet the above requirements at the minimum possible cost. formulate this as an lp problem. you must define your variables clearly

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > 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?

Denise is a hard worker, but she has always had differences with her boss, angela. angela has recently become more demanding and is often unwilling to provide clarification on project requirements. after too many long working days with little or no job satisfaction, denise walked into angela's office and submitted her resignation. denise knows that her résumé is strong and feels confident she will find another job. denise is now facing unemployment. a. seasonalb. cyclicalc. structurald. frictional