Brain researchers think that the best reason the brain might weight the present high and the future low when faced with a present-future tradeoff is that:

responding quickly and definitively to present rewards might have come with an evolutionary advantage.
people are naturally short-run thinkers.
the future is harder to visualize than the present.
people naturally think they may die in the future.
a and c

Straight arrow unloaded two tankers worth of toxic waste at an important port in the country of urithmea. a hundred workers worked two days in their shorts and sandals to unload the barrels from the tankers for $5 a day. they were not told about the content of the barrels. some observers felt that it was the obligation of not just the government of urithmea but also of straight arrow to ensure that no harm was done to the workers. these observers are most likely

You are the manager of the packaging department in a cookie factory. (obviously, the packaging employees cannot eat the cookies that are transferred in during the period.) after your employees insert cookies into colorful packages (step 1) for display on store shelves, the packages of cookies are then boxed using cardboard cartons (step 2) for shipment to stores. each unit of product is represented by a carton of packaged cookies. the packaging department began the period with 1,000 units of cookies. during the period, 5,000 units of cookies were transferred in from the baking department and 5,500 units of cookies were transferred out to the finished goods department. the number of units of cookies in the ending inventory of the packaging department equals:

The solution set for -18 < 5x-3 iso-3х3< xо-3хo3 > x