Bob is given some key items from a regression analysis. the regression equation (i. e., fitted line) is (monthly irrigation spent per acre) = 20 - .5 * (monthly rainfall in inches). the r^2 in this same analysis is .99. using this equation to predict an outcome, what monthly irrigation spending could bob expect if it there was no rain in a given month? (a) $10/acre (b) $16/acre (c) $18/acre (d) $20/acre

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature