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1. |
A best-fit line drawn on a scatter plot ________ |
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A. |
approximates the linear relationship of data points. |
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B. |
is a line that goes through every data point. |
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C. |
must be drawn through the first and last data points. |
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D. |
always has a positive slope. |
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Hint |
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2. |
State the solution of the system of equations graphed below. |
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A. |
(3, 1) |
B. |
(3, -1) |
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C. |
(0, 3) |
D. |
(-1, 3) |
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Hint |
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3. |
Factor 8a4b - 3ab2c. |
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A. |
abc(8a3 - 3b) |
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B. |
a2b(8a2 - 3bc) |
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C. |
ab(8a3 - 3bc) |
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D. |
8ab(a2 - 3bc) |
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Hint |
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4. |
Find the median of {55, 21, 47.4, 69, 71}. |
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A. |
55 |
B. |
71 |
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C. |
21 |
D. |
47.4 |
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Hint |
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5. |
What is the shape of the intersection of a sphere and a horizontal plane? |
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A. |
circle |
B. |
trapezoid |
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C. |
triangle |
D. |
square |
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Hint |
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6. |
An expression for the area of a rectangle is xy – 2x + 3y – 6. Express this area in factored form. |
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A. |
(xy – 2x)( 3y – 6) |
B. |
(x – 2)(y + 3) |
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C. |
(x + 3)(y – 2) |
D. |
x(y – 2) + 3(y – 2) |
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Hint |
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7. |
Factor 10x2 + 24x + 8. |
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A. |
2(x + 2)(5x + 2) |
B. |
(x + 2)(5x + 2) |
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C. |
2(x + 4)(5x + 1) |
D. |
(2x + 4)(5x + 2) |
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Hint |
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8. |
Find the coordinates of the vertex of the graph of the equation
y = -3x2 - 12x - 5. |
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A. |
(2, -41) |
B. |
(-4, -5) |
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C. |
(1, -20) |
D. |
(-2, 7) |
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Hint |
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9. |
What is the locus of all points in a plane that are 3 units from a given point in that plane? |
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A. |
sphere of radius 3 units. |
B. |
segment of length 3 units. |
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C. |
circle of radius 9 units. |
D. |
circle of radius 3 units. |
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Hint |
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10. |
The intersection of two planes could be a ______. |
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A. |
line |
B. |
plane |
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C. |
point |
D. |
segment |
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Hint |
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11. |
Ed has a piece of rope with exactly 10 knots tied to make 9 equal lengths as shown. Using the rope, he wants to use the entire rope to make a triangle so that each vertex of the triangle occurs at a knot. How many different triangles can Ed make? |
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A. |
2 |
B. |
3 |
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C. |
5 |
D. |
4 |
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Hint |
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12. |
Two polygons are similar if ___________. |
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A. |
they are the same size but possibly different shapes |
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B. |
they are the same size and same shape |
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C. |
they are the same shape but possibly different sizes |
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D. |
they are not congruent |
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Hint |
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13. |
Simplify  |
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A. |
 |
B. |
 |
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C. |
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D. |
 |
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Hint |
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14. |
A cafeteria has two meal plans. One requires the worker to pay $20 for the card, and $1 each time x she uses it. The other plan requires the worker to pay $30 for the card, but only $0.50 each time x she uses it. After how many uses will the workers with different plans have spent the same amount of money? |
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A. |
It will never happen. |
B. |
5 uses |
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C. |
10 uses |
D. |
20 uses |
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Hint |
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15. |
If the product of two factors is 0, which of the following cannot be true? |
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A. |
Neither of the factors is 0. |
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B. |
One of the factors is 0. |
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C. |
Both of the factors are 0. |
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D. |
One of the factors is 10. |
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Hint |
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16. |
Which of the graphs will have the lowest standard deviation? |
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A. |
 |
B. |
 |
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C. |
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D. |
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Hint |
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17. |
Which value is a solution to  |
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A. |
-11 |
B. |
17 |
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C. |
11 |
D. |
-15 |
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Hint |
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18. |
What is the mean of the set {4, 7, 3, 8, 2, 6, 5, 8, 3, 2}? Round to the nearest tenth. |
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A. |
4.8 |
B. |
6 |
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C. |
4.5 |
D. |
3 and 2 |
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Hint |
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19. |
Two sides of an angle are contained in lines whose equations are  and  Find the coordinates of the vertex of the angle. Round to the nearest hundredth. |
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A. |
(1.89, 3.26) |
B. |
(2.76, 3.16) |
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C. |
(1.79, 1.06) |
D. |
(1.78, -1.16) |
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Hint |
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20. |
Find the coordinates of the vertex for the equation y = -3x2 - 6x + 4. |
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A. |
(-1, 7) |
B. |
(0, 4) |
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C. |
(1, -5) |
D. |
(-1, -7) |
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Hint |
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