30 points statistics! students at a university were surveyed about when they registered for classes. the results of the survey are shown in the table. if a student registered early, find the probability that the student is an undergraduate. registered early registered on time undergraduate 211 347 graduate 329 581 a. 0.608 b. 0.391 c. 0.144 d. 0.374

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

X+y=-4 x-y=2 use elimination with adding and subtraction

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.