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At Shiprock, New Mexico, a perennially powerful girls' high school basketball team has become a path to college for some and a source of pride for a community where the household incomes of 49 percent of them are below the poverty level.
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Quasars are so distant that their light has taken billions of years to reach the Earth; consequently, we see them as they were during the formation of the universe.
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Teratomas are unusual forms of cancer because they are composed of tissues such as tooth and bone not normally found in the organ in which the tumor appears.
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Pablo Picasso, the late Spanish painter, credited African art with having had a strong influence on his work.
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Even their most ardent champions concede that no less than a technical or scientific breakthrough is necessary before solar cells can meet the goal of providing one percent of the nation's energy needs.
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A letter by Mark Twain, written in the same year as The Adventures of Huckleberry Finn were published, reveals that Twain provided financial assistance to one of the first Black students at Yale Law School.
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In the last few years, the number of convicted criminals given community service sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have risen dramatically.
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PREP07 Test 2
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Whenever Martin has a restaurant bill with an amount between $10 and $99, he calculates the dollar amount of the tip as 2 times the tens digit of the amount of his bill. If the amount of Martin's most recent restaurant bill was between $10 and $99, was the tip calculated by Martin on this bill greater than 15 percent of the amount of the bill?(1)The amount of the bill was between $15 and $50.(2)The tip calculated by Martin was $8.
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Is k greater than t?(1)$$kt = 24$$(2)$${k}^{2} >{t}^{2}$$
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OG12 OG15
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If Sara's age is exactly twice Bill's age, what is Sara's age?(1)Four years ago, Sara's age was exactly 3 times Bill's age.(2)Eight years from now, Sara's age will be exactly 1.5 times Bill's age.
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 In the figure above,what is the ratio $$\frac{KN}{MN}$$?(1)The perimeter of rectangle $$KLMN$$ is 30 meters(2)The tfree small rectangles have the same dimensions
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PREP07 Test 1
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If r and s are positive integers, is $$\frac{r}{s}$$ an integer?(1)Every factor of s is also a factor of r.(2)Every prime factor of s is also a prime factor of r.
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OG12 OG15
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$${S}=\frac{\frac{2}{n}}{\frac{1}{x}+\frac{2}{3x}}$$In the expression above, if $${x}{n}≠{0}$$, what is the value of S?(1)x = 2n(2)$$n =\frac{1}{2}$$
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OG12 OG15
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If n is a positive integer, is the value of b - a at least twice the value of $${3}^{n}-{2}^{n}$$ ?(1)$$a ={2}^{n+1}$$ and $$b={3}^{n+1}$$(2)$$n = 3$$
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OG12 OG15 OG16
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Every member of a certain club volunteers to contribute equally to the purchase of a $60 gift certificate. How many members does the club have?(1)Each member's contribution is to be $4.(2)If 5 club members fail to contribute, the share of each contributing member will increase by $2.
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If mand nare positive integers, is $$\sqrt{n-m}$$ an integer?(1)$$n > m + 15$$(2)$$n = m(m + 1)$$
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If $${x}!=-{y}$$, is$$\frac{x-y}{x+y} >1$$(1)$$x >0$$(2)$$y<0$$
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OG12 PREP07 Test 2
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In the rectangular coordinate system, are the points (r,s) and (u,v) equidistant from the origin?(1)r+s=1(2)u = 1 - r and v = 1 - s
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PREP07 Test 1
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On Jane's credit card account, the average daily balance for a 30-day billing cycle is the average (arithmetic mean) of the daily balances at the end of each of the 30 days. At the beginning of a certain 30- day billing cycle, Jane's credit card account had a balance of $600. Jane made a payment of $300 on the account during the billing cycle. If no other amount were added to or subtracted from the account during the billing cycle, what was the average daily balance on Jane's account for the billing cycle?(1)Jane's payment was credited on the 21st day of the billing cycle,(2)The average daily balance through the 25th day of the billing cycle was $540.
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OG12 OG15 OG16
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Is n an integer?(1)$${n}^{2}$$ is an integer.(2)$$\sqrt{n}$$ is an integer.
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