Based on the dividend growth model, an increase in investors' overall level of required returns will

there's 11 people for the 1st position. then, no matter who gets it, there's only 10 left for the second, and then 9 left for the third. 11 x 10 x 9 = 990.   the answer is there are 990 different ways the positions can be filled by these applicants

answerblank(1); fixed interval; blank(2) fixed ratio;