You are the director of marketing for a nationwide chain of stores. sales are flat, and something must be done quickly to restore shareholders' faith in the company. you need to discuss marketing strategies with the district managers for all of the regions in the chain as soon as possible. how can you communicate with all of them efficiently

Anew 2-lane road is needed in a part of town that is growing. at some point the road will need 4 lanes to handle the anticipated traffic. if the city's optimistic estimate of growth is used, the expansion will be needed in 4 years and has a probability of happening of 40%. for the most likely and pessimistic estimates, the expansion will be needed in 8 and 15 years respectively. the probability of the pessimistic estimate happening is 20%. the expansion will cost $ 4.2 million and the interest rate is 8%. what is the expected pw the expansion will cost?