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If $${x}^{2}+{3}{x}+{c}=({x}+{a})({x}+{b})$$ for all x, what is the value of c ?(1)$$a = 1$$(2)$$b = 2$$
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OG12 OG15 OG16 OG17
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Is the number of seconds required to travel $${d}_{1}$$ feet at $${r}_{1}$$ feet per second greater than the number of seconds required to travel $${d}_{2}$$ feet at $${r}_{2}$$ feet per second?(1)$${d}_{1}$$ is 30 greater than $${d}_{2}$$.(2)$${r}_{1}$$ is 30 greater than $${r}_{2}$$.
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If n > 0, which is greater, 20 percent of n or 10 percent of the sum of n and 0.5 ?(1)n < 0.1(2)n > 0.01
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 In the figure shown, line segments ST and TU are parallel to the x-axis and the y-axis, respectively. What is the sum of the coordinates of point T ?(1)The y-coordinate of point U is 1.(2)The x-coordinate of point S is -5.
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OG12 OG15 OG16 OG17
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Max has $125 consisting of bills each worth either $5 or $20. How many bills worth $5 does Max have?(1)Max has fewer than 5 bills worth $5 each.(2)Max has more than 5 bills worth $20 each.
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At a sale all books were priced equally and all magazines were priced equally. What was the price of 3 books and 4 magazines at the sale?(1)At the sale the price of a book was $1.45 more than the price of a magazine.(2)At the sale the price of 6 books and 8 magazines was $43.70.
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代数
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If x and y are positive, is $$4x>{3y}$$?(1)$$x>{y-x}$$(2)$$\frac x y<1$$
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If x and y are positive, what is the value of $$x -y$$?(1)$$\frac {x^2-y^2} {x+y}={1}$$(2)$$x+y=7$$
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If x and y are positive, is 3x > 7y?(1)x > y + 4(2)-5x< -14y
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If J, S, and V are points on the number line, what is the distance between S and V?(1)The distance between J and S is 20.(2)Thedistance between J and V is 25.
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OG12
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For a convention, a hotel charges a daily room rate of $120 for 1 person and x dollars for
each additional person. What is the charge for each additional person?(1)The daily cost per person for 4 people sharing the cost of a room equally is $45.(2)The daily cost per person for 2 people sharing the cost of a room equallyis$25
more than the corresponding cost for 4 people.
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OG12 OG15 OG16 OG17 OG18 OG19 OG20
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 In the figure, points A, B, C, D, and E lie on a line. A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller circle, and E is on the larger circle. What is the area of the region inside the larger circle and outside the smaller circle?(1)AB = 3 and BC =2(2)CD =1 and DE = 4
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PREP07 Test 2
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If x and z are integers, is at least one of them even?(1)x + z is odd.(2)x - z is odd.
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If wz < 2, is z < 1?(1)w > 2(2)z < 2
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 Lines m and n intersect, as shown in the figure above. What is the value of u - w?(1)u = 90(2)Lines m and n are perpendicular.
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A wholesaler bought 1,200 radios for $18 each. The wholesaler sold 60 percent of the radios for $30 each and the rest for $15 each. What was the wholesaler's average (arithmetic mean) profit per radio?
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OG15 OG16 OG17 OG18
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In the coordinate plane, a circle has center (2, -3) and passes through the point (5, 0). What is the area of the circle?
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Of the families in City X in 1994, 40 percent owned a personal computer. The number of families in City X owning a computer in 1998 was 30 percent greater than it was in 1994, and the total number of families in City X was 4 percent greater in 1998 than it was in 1994. What percent of the families in City X owned a personal computer in 1998?
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OG12
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If the sum of 5, 8, 12, and 15 is equal to the sum of 3, 4, x, and x + 3, what is the value of x ?
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The buyer of a new home must choose 2 of 4 types of flooring and 2 of 6 paint colors. How many different combinations of type of flooring and paint color are available to the home buyer?
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