Let x1 and x2 be 0 - 1 variables whose values indicate whether projects 1 and 2 are not done or are done. which answer below indicates that project 2 can be done only if project 1 is done? x1 + x2 = 1 x1 + x2 = 2 x1 − x2 ≥ 0 x1 − x2 ≤ 0

Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .