Jeff is producing an outdoor concert. he estimates that he will make 4000 dollars if it does not rain, and make 750 dollars if it does rain. the local weather station (which we'll assume is accurate in giving forecasts) predicts that the chance of rain is 26 percent for the day of the concert. what is jeff's expected earnings from the concert?

Consider the market for gas-powered small cars. assume gas-powered small cars are a normal good. for each of the following events, identify which of the determinants of demand or supply are affected. if demand is unaffected by this event because it creates only a supply change, select the “none” option under the “demand determinant” column. similarly, if supply is unaffected by this event because it creates only a demand change, select the “none” option under the “supply determinant” column. event demand determinant supply determinant people decide to have more children. the price of electric small cars falls. the discovery of a new source of iron ore lowers steel prices. an economic recession lowers people’s wealth. a number of major car dealers decide to switch from selling gas-powered cars to selling electric cars. show the effect of the following event on the market for gas-powered small cars: people decide to have more children for each of the four independent situations, prepare the journal entries to record the exchange on the books of each company.