Admission Tests GRE - GRE General Test
Sunflower sea stars help maintain certain kelp forest ecosystems by eating quickly reproducing prey species such as urchins, thus keeping populations low. Without the sea stars, the urchin population explodes, which is bad news for kelp forests and everything in them. Gianl kelp can grow to 150 feet underwater at a speed of two feet a day. but their weaknesses are their holdfasts. which are akin to tree roots. The holdfasts are home to brittle stars, prawns, and snails, among other creatures. Urchins like to eat the kelp holdfasts. Once the holdfasts are gone, the rest of the kelp drifts oft* in the tides. In this way. urchins can destroy the forests, which, higher up. are also home (o fish, including several types of commercially important rockfish,
The passage compares kelp holdfasts to tree roots in order to
The graph summarizes the responses from 4.500 respondents who rated their degree of confidence in each of eight United States institutions. Each respondent gave each institution one of five confidence ratings: high, moderate, little, none, or undecided.
If 20 percent of the respondents rated both their degree of confidence in the federal government and their degree of confidence in the news media high or moderate, what percent of the respondents gave neither of these institutions a confidence rating of high or moderate?
Exhibit.
If -1 < X < y < z < 1, which of the following must be true?
If one item is tobe randomly selected from the items whose manufacturing cost is greater than $140. what is the probability that the item selected will be one whose manufacturing time is greater than 60 minutes?
A)
B)
C)
D)
E)
Exhibit.
In the figure shown, AC = 5, BC = 2, and AE = 8- What is the area of rectangle ABDF?
Sets A and B contain 40 and 30 elements, respectively, and 16 of the elements in B are not in A. Set C is the set of all elements that are in .-1 or in B or in both. One element is to be selected at random from C. What is the probability that the selected element will be a member of both A and B ?
A)
B)
C)
D)
E)
r, t, m, and w are positive numbers.
Company A had 47 employees a! the beginning of 2001 and 78 employees at the beginning of 2008.
Company B had 53 employees at the beginning of 2004 and 90 employees at the beginning of 2013.
A box is being lowered lo the ground by a machine. The distance from the bottom of the box to the ground is initially 244 centimeters, and the distance decreases at a constant rate of 2 centimeters per second until the bottom of the box reaches the ground. If the distance is graphed in the w-plane. where v represents the distance, in centimeters, from the bottom of the box to the ground after X seconds, what is the .x-intercept of the graph?
