A lockbox plan is a. used to identify inventory safety stocks. b. used to protect cash, i. e., to keep it from being stolen. c. used primarily by firms where currency is used frequently in transactions, such as fast food restaurants, and less frequently by firms that receive payments as checks. d. used to slow down the collection of checks our firm writes. e. used to speed up the collection of checks received.

Power plants that rely on coal increase the amount of sulfur dioxide that dissolves into the air, eventually increasing the acidity of precipitation. the higher acidity of rain and snow can damage forests by making it more difficult for plants to absorb minerals from the soil. the equations below provide information about the market demand and supply of electricity. there is a constant marginal external cost of $25 per unit of electricity.d: qd= 200 – 2ps: qs=p – 10what quantity of electricity satisfies allocative efficiency in this market? a. 60b. 70c. 50d. 43.3