Help pls according to the video what do librarians need to do after there job 1.attend conferences where they train other librarians
2.volunteer in schools to advise students how to use libraries
3.slowly share there knowledge with other librariens
4continually train to stay up to date on information technologies

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

With the use/abuse of alcohol, the heart is more efficient in the use of nutrients by the heart tissue.

Cigarette manufacturers purposefully add to cigarettes in order to give them a particular flavor. a. cocaine b. carcinogens c. cigarette ashes d. a and b