All else equal, as the price of oil falls, potential profits from producing oil ________ which ________ oil companies to look for additional sources of oil

Fast Food Terminals Taco Casa is considering installing touch screen terminals for patrons to place their food orders. They discovered that installation costs at stores with four screens were $60,000 but were $80,000 at stores with six terminals. What are the marginal costs of installing another terminal at a location?

Refer to the data. On the basis of cost-benefit analysis, government should undertake:

The following data are for a series of increasingly extensive flood control projects:
A. Plan D.
B. Plan C.
C. Plan B.
D. Plan A.