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OG19-数学分册	David used part of $100,000 to purchase a house. Of the remaining portion, he invested $$\frac{1}{3}$$ of it at 4 percent simple annual interest and $$\frac{2}{3}$$ of it at 6 percent simple annual interest. If after a year the income from the two investments totaled $320, what was the purchase price of the house?
Ready4	According to one biographer, Steve Jobs's passion for the details of music, philosophy, and other fields in the humanities were critical to his success, influencing his sense of design as much as his technological savvy did.
Ready4	Dadaism, the avant-garde European artistic movement of the early twentieth century, a phenomenon in which the postwar economic and moral sentiments gave birth to art that appeared to reject logic and embrace chaos.
OG12 OG15 OG16 OG17	On a scale that measures the intensity of a certain phenomenon, a reading of n + 1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?
PREP07 Test 1	Of the 13 employees in a certain department, 1 has an annual salary of $38,000, 2 have an annual salary of $45,000 each, 2 have an annual salary of $42,500 each, 3 have an annual salary of $40,000 each, and 5 have an annual salary of $48,500 each. What is the median annual salary for the 13 employees?
Ready4	A youth group will select 1 of 6 eligible members to attend a summer conference and 2 of 9 eligible members to attend a winter conference. If none of the members is eligible to attend both conferences, how many different sets of 3 members are there to attend the two conferences?
181215	Someone started doing experiments at midnight. Each experiment took the same time, and the next experiment was start immediately after each experiment. She used hhmm to record the time. For example, she recorded 1:30 as 0130. When she finished her first experiment, she recorded 0014. What was the four-digit number she recorded when finishing the 18th experiment?
190113	A truck is used to transport olive oil. The density of olive oil is 50 pounds/feet³. The cylindrical tank of the truck is 6 feet in diameter and 9 feet in length. The empty truck is 11000 pounds. How many tons is the truck when it is full of olive oil? (1 ton = 2204.62 pounds)
Ready4	The seeming absence in the universe of a quantity of mass able to explain various phenomena, specifically gravitational effects, believed to be evidence for the existence of dark matter.
OG18 OG19 OG20 OG2022	During a certain time period, Car X traveled north along a straight road at a constant rate of 1 mile per minute and used fuel at a constant rate of 5 gallons every 2 hours. During this time period, if Car X used exactly 3.75 gallons of fuel, how many miles did Car X travel?
OG18-数学分册	The “prime sum” of an integer n greater than 1 is the sum of all the prime factors of n, including repetitions. For example, the prime sum of 12 is 7, since 12 = 2 * 2 * 3 and 2 + 2 + 3 = 7. For which of the following integers is the prime sum greater than 35 ?
Magoosh	Benford's Law states that most phenomena in nature begin with '1's and '2's. The law has been shown to apply very accurately to the amount of money listed on people's income statements. Investigators have used this fact when investigating financial fraud, and can often determine when people have fabricated numbers, since the perpetrators will choose varying amounts so that the first number in each of those amounts is distributed evenly from '1' to '9'. Proponents of Benford's Law, therefore, argue that as the technique of applying Benford's law becomes even more refined, an expert's ability to determine whether a plaintiff has engaged in financial fraud will become as accurate in determining guilt as a fingerprint is today.Which of the following, if true, casts the most doubt on the conclusion drawn by proponents of Benford's Law?
	Plastic SurgeryData from each of the countries presented was collected regarding proportions of the overall population that go through different types of plastic surgeries. Surgeries are segmented into non-invasive and invasive treatments and subsegmentations are shown on the graph.Select the most appropriate drop down text that fills in the sentence.has more invasive procedures per 1,000 population as a percentage of all types of procedures shown than any other country in the world. Fat surgeries account for the largest portion of this country's invasive surgeries and account for at least 2 procedures per 1,000 population.The number of face and hair surgeries for each country isto the overall number of surgeries for a given country in 2010.
GI	The graph shows the effect of voters' previously stated preference regarding the issue of working-time reduction on the probability of those voters' actual choice being the same as that stated preference. Using the drop-down menus, fill in the blanks to make the most accurate statements based on the graph.Members of the party are most apt to vote according to their previously stated preference regarding the issue of working-time reduction.Members of the party are most apt to vote against the issue of working-time reduction if their previously stated preference regarding the issue of working-time reduction was also against.
OG17 OG18	During a four-day period, a height measurement and a weight measurement were recorded shortly after delivery for each baby born in a particular hospital. The 19 babies in the study were divided into two groups, Group A and Group B. the chart shows the length, in centimeters (cm), and weight, in kilograms (kg), for each of the 19 babies.Based on the information given, use the drop-down menus to most accurately complete the following statements.The correlation between length and weight for the babies in the study is .If a baby with weight less than 3.5kg were selected at random, the probability that the baby would be a part of Group A is .
300难题	The figure above shows the dimensions of a rectangular board that is to be cut into four identical pieces by making cuts at points A, B, and C,as indicated. If x = 45, what is the length AB ?(1 foot = 12 inches)
OG12	Drum X is $$\frac{1}{2}$$ full of oil and Drum Y, which has twice the capacity of Drum X, is $$\frac{2}{3}$$ full of oil. If all of the oil in Drum X is poured into Drum Y, then Drum Y will be filled to what fraction of its capacity?
300难题	When 2/9 of the votes on a certain resolution have been counted, 3/4 of those counted are in favor of the resolution. What fraction of the remaining votes must be against the resolution so that the total count will result in a vote of 2 to 1 against the resolution?
191222	A team of 15 people is working on a project. They work 8 hours per day and have completed 1/4 of the total project in 18 days. How many additional people, each working at the same constant rate, will be needed to complete the rest of the project in 6 days?
	The colored bubble chart plots 5 business jets models against each other in terms of minimum number of feet required for takeoff, number of inches of leg room, price, and prestige.Fill each blank using the drop-down menu to create the most accurate statement on the basis of the information provided.A) The business jet that offers the best value per inch of leg room is the.B) The owner of a Learjet Lux would have to paymore dollars per foot required for takeoff on a Bombardier?