| |
| |
1. |
If j(x) = x2 + 1, find j(a + 1). |
| |
|
A. |
a2 + 2a + 2 |
B. |
a2 + 2a + 1 |
| |
|
C. |
a2 + a + 1 |
D. |
a2 + a + 2 |
| |
|
Hint |
|
| |
2. |
Find the x- and y-intercepts for 3x + 4y - 12 = 0. |
| |
|
A. |
(-3, 0) and (0, -4) |
B. |
(0, 3) and (4, 0) |
| |
|
C. |
(-4, 0) and (0, -3) |
D. |
(0, 4) and (3, 0) |
| |
|
Hint |
|
| |
3. |
Rewrite the equation 3x + y = 7 in slope-intercept form. |
| |
|
A. |
y = 7x + 3 |
B. |
y = 3x - 7 |
| |
|
C. |
y = -3x - 7 |
D. |
y = -3x + 7 |
| |
|
Hint |
|
| |
4. |
Which is the best prediction equation for the data? |
| |
|
 |
| |
|
A. |
y = 25x - 19,950 |
B. |
y = 5x - 19,950 |
| |
|
C. |
y = 10x - 19,950 |
D. |
y = 20x - 19,950 |
| |
|
Hint |
|
| |
5. |
The math scores, x, and chemistry scores, y, for six students are given in the table. Use a graphing calculator to find the Pearson product-moment correlation. |
| |
|
 |
| |
|
A. |
about 0.74 |
B. |
about 0.68 |
| |
|
C. |
about 0.65 |
D. |
about 0.71 |
| |
|
Hint |
|
| |
6. |
Which is the graph of ?
|
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
7. |
Which is the graph of g(x) = |6 - |2x||? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
8. |
An automobile manufacturer produces two kinds of cars--the Bobcat x and the Lion y. The company must always produce twice as many Bobcats as Lions and at least 300 cars but no more than 1200 cars per day. Model this situation algebraically. |
| |
|
A. |
300 x + 2y 1200 and x = 2y |
| |
|
B. |
300 x + 2y 1200 |
| |
|
C. |
300 x + y 1200 and x = 2y |
| |
|
D. |
300 2x + y 1200 |
| |
|
Hint |
|
| |
9. |
The equation 2x - y + 3z = 5 represents _____________ |
| |
|
A. |
a circle. |
B. |
a line. |
| |
|
C. |
none of these. |
D. |
a plane. |
| |
|
Hint |
|
| |
10. |
Three planes can |
| |
|
A. |
All of the choices are true. |
B. |
have no points in common. |
| |
|
C. |
intersect in a line. |
D. |
intersect at one point. |
| |
|
Hint |
|
| |
11. |
In 1999 Bob scored 824 points as a college basketball player by hitting 372 of his attempts. If he made 60% of his 200 3-point field goal attempts, how many 1-, 2-, and 3-point field goal baskets did he make? |
| |
|
A. |
(40, 212, 120) |
B. |
(212, 40, 120) |
| |
|
C. |
(40, 120, 212) |
D. |
(120, 40, 212) |
| |
|
Hint |
|
| |
12. |
If A = , find -2A. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
13. |
Triangle ABC has vertices A(7, 2), B(3, -1), and C(1, 4). Find the image of the triangle after a reflection over the x-axis. |
| |
|
A. |
A'(-7, -2), B'(-3, 1), C'(-1, -4) |
B. |
A'(7, -2), B'(-1, 3), C'(-1, -4) |
| |
|
C. |
A'(2, 7), B'(-1, 3), C'(4, 1) |
D. |
A'(7, -2), B'(3, 1), C'(1, -4) |
| |
|
Hint |
|
| |
14. |
Solve the system of inequalities by graphing. |
| |
|
 |
| |
|
A. |
 |
| |
|
B. |
 |
| |
|
C. |
 |
| |
|
D. |
 |
| |
|
Hint |
|
| |
15. |
Find the zero of f(x) = 2x - 3, then graph the function. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
16. |
Find a linear equation that can be used as a model for the data shown. |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
17. |
Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. |
| |
|
 |
| |
|
A. |
Paul's test scores improve an average of 3 points with each test. |
| |
|
B. |
Paul's test scores improve an average of 15 points with each test. |
| |
|
C. |
Paul's test scores are neither increasing nor decreasing. |
| |
|
D. |
Paul's test scores improve an average of 5 points with each test. |
| |
|
Hint |
|
| |
18. |
Which is the graph of the compound inequality 0 x + y 4? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
19. |
The image of after Rot180 · Ry-axis is the same as which other reflection, if the vertices are A(1,1), B(2,6), C(6,4)? |
| |
|
A. |
reflection over the line y = x |
B. |
none of these |
| |
|
C. |
reflection over the y-axis |
D. |
reflection over the x-axis |
| |
|
Hint |
|
| |
20. |
Solve this problem using matrix equations.How many liters of 0.25 solution and 0.40 solution should be combined to make 10 liters of 0.35 solution? |
| |
|
A. |
6.66 L of the 0.25 solution and 3.33 L of the 0.40 solution. |
| |
|
B. |
3.33 L of the 0.25 solution and 6.66 L of the 0.40 solution. |
| |
|
C. |
4.5 L of the 0.25 solution and 5.5 L of the 0.40 solution. |
| |
|
D. |
2.5 L of the 0.25 solution and 7.5 L of the 0.40 solution. |
| |
|
Hint |
|
|
|