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1. |
Which is the best prediction equation for the data? |
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A. |
y = 10x - 19,950 |
B. |
y = 25x - 19,950 |
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C. |
y = 5x - 19,950 |
D. |
y = 20x - 19,950 |
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Hint |
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2. |
Suppose a figure is animated to spin around a certain point. If the image has key points as A(2, 1), B(3, 5) and C(6, 2), and the rotation is about the origin, find the location of these points at a 270° counterclockwise rotation. |
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A. |
A'(-2, -1), B'(-3, -5),
C'(-6, -2) |
B. |
A'(1, -2), B'(5, -3), C'(2, -6) |
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C. |
A'(1, -2), B'(-5, 3), C'(-2, 6) |
D. |
A'(-1, 2), B'(-5, 3), C'(-2, 6) |
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Hint |
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3. |
A triangle ABC has vertices A(3, -1), B(4, -2), and C(7, 1). Find the coordinates of the dilated triangle for a scale factor of 3. |
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A. |
A'(21, 3), B'(12, -6),
C'(-9, -3) |
B. |
A'(9, -3), B'(12, -6),
C'(21, 3) |
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C. |
A,/i>'(12, -6), B'(21, 3),
C'(-9, -3) |
D. |
A'(-3, 9), B'(-6, 12),
C'(3, 21) |
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Hint |
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4. |
If the lumber mill can turn out 900 units of product each week and must produce 100 units of lumber and 400 units of plywood, graph the systems of inequalities. Let
x = units of lumber, and y = units of plywood. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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5. |
Which is the graph of y  x3 + 1? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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6. |
The roots of the equation x2 - 8x - 20 = 0 are ____. |
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A. |
2 and 10 |
B. |
-2 and 10 |
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C. |
-2 and -10 |
D. |
2 and -10 |
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Hint |
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7. |
If  find  |
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A. |
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B. |
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C. |
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D. |
7 |
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Hint |
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8. |
Find cos P. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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9. |
Evaluate tan  . |
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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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10. |
Write an equation for a secant function with period 2 , phase shift  , and vertical shift 1. |
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A. |
y = sec  + 1 |
B. |
y = sec  - 1 |
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C. |
y = sec + 1 |
D. |
y = sec - 1 |
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Hint |
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11. |
Solve  cos x - 1 = 0 for all real values of x. |
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A. |
 + 2 k,  +2k |
B. |
+ k |
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C. |
 +2k,  + 2k |
D. |
 +2k,  + 2k |
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Hint |
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12. |
Write the equation 3x + 4y - 10 = 0 in normal form. |
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A. |
 x +  y - 2 = 0 |
B. |
x + y - 2 = 0 |
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C. |
x + y + 2 = 0 |
D. |
x + y + 2 = 0 |
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Hint |
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13. |
What is the magnitude of the resultant of a 100-newton force along the x-axis and a 150-newton force at an angle of 40° to each other? |
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A. |
235.54 N |
B. |
180.28 N |
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C. |
125 N |
D. |
162.99 N |
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Hint |
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14. |
Ilene analyzed her test scores and determined the equation of the best-fit line was y = 4.25x + 72. Predict her score for the 5th test. |
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A. |
88.75 |
B. |
72.5 |
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C. |
93.25 |
D. |
98.5 |
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Hint |
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15. |
What is the value of y when x = 2? |
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A. |
0 |
B. |
undefined |
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C. |
2 |
D. |
1 |
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Hint |
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16. |
The quadrilateral with vertices A(-1,5), B(2,7), C(4,5) and D(3,3) is reflected over the line y = x . Find the image of the quadrilateral after the reflection. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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17. |
The function f(x) = -(x - 3)2 + 4 has a critical point at x = 3. Determine and classify this point. |
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A. |
(3,4) is the absolute maximum of this function. |
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B. |
(3,4) is the absolute minimum of this function. |
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C. |
(3,4) is the point of inflection. |
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D. |
(3,4) is the relative maximum of this function. |
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Hint |
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18. |
If cos  =  and has its terminal side in the first quadrant, find the exact value of cos  . |
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A. |
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B. |
- |
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C. |
- |
D. |
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Hint |
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19. |
If a vector has its initial point at the origin, it ________. |
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A. |
is in standard position |
B. |
has a magnitude of zero |
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C. |
has no direction |
D. |
is a scalar |
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Hint |
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20. |
Find  if  and  . |
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A. |
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B. |
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C. |
-8 |
D. |
5 |
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Hint |
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