"which always increase(s) as output increases? " a. marginal cost only b. total cost only c. variable cost only d. total cost and variable cost e. fixed cost only

You wants to open a saving account.which account will grow his money the most

Oliver's company is planning the launch of their hybrid cars. the company has included "never-before-seen" product benefits in the hybrid cars. which type of advertising should oliver's company use for the new cars?

Plastic and steel are substitutes in the production of body panels for certain automobiles. if the price of plastic increases, with other things remaining the same, we would expect: a) the demand curve for plastic to shift to the left. b) the price of steel to fall. c) the demand curve for steel to shift to the left d) nothing to happen to steel because it is only a substitute for plastic. e) the demand curve for steel to shift to the right