All of the following are TRUE, with the exception of one condition: A) a high R2 or does not mean that the regressors are a true cause of the dependent variable. B) a high R2 or does not mean that there is no omitted variable bias. C) a high R2 or always means that an added variable is statistically significant. D) a high R2 or does not necessarily mean that you have the most appropriate set of regressors. C

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.