Name something that we can have a shortage of that can affect our economy

(a) what was the opportunity cost of non-gm food for many buyers before 2008? (b) why did they prefer the alternative? (c) what was the opportunity cost in 2008? (d) why did it change?

Agovernment receives a gift of cash and investments with a fair value of $200,000. the donor specified that the earnings from the gift must be used to beautify city-owned parks and the principal must be re-invested. the $200,000 gift should be accounted for in which of the following funds? a) general fund b) private-purpose trust fund c) agency fund d) permanent fund

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?