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1. |
State the number of solutions to the system of equations graphed below. |
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A. |
2 |
B. |
1 |
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C. |
infinitely many |
D. |
0 |
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Hint |
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2. |
What is true about the system  and  |
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A. |
The system is inconsistent. |
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B. |
The system is consistent and independent. |
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C. |
The system has infinitely many solutions. |
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D. |
The system is consistent and dependent. |
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Hint |
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3. |
Solve the system of equations by using substitution. 
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A. |
(5, 11) |
B. |
(3, 7) |
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C. |
(1, 3) |
D. |
(4, 9) |
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Hint |
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4. |
Solve the system of inequalities by graphing. 
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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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5. |
Which coordinates are not of the vertices of the feasible region for the system of inequalities? 
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A. |
(5, 4) |
B. |
(5, 1) |
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C. |
(2, 4) |
D. |
(0, 6) |
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Hint |
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6. |
A baker earns 15¢ profit per glazed doughnut g, and 40¢ profit per jelly doughnut j. If a customer wants to buy no more than a dozen doughnuts and wants to try at least one of each kind, what is the maximum profit the baker can earn? |
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A. |
$4.55 |
B. |
$1.80 |
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C. |
$4.80 |
D. |
$3.30 |
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Hint |
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7. |
The solution of a system of three linear equations in three variables, x, y, and z, is called a(n) ____ (x, y, z). |
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A. |
sum |
B. |
ordered triple |
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C. |
ordered pair |
D. |
integer |
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Hint |
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8. |
Solve the system of equations 3x – 5y = 4
–2x + 4y = 3. |
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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. |
Which graph represents the following system:  |
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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. |
At a firm, there are three workers that are supposed to work a combined 110 hours per week. Worker 1 gets paid $10 per hour, worker 2 gets paid $12 per hour, and worker 3 gets paid $14 per hour. If the company wants their total income to be $1268, how many hours should each one work if worker 3 and worker 2 work for the same amount of hours? |
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A. |
worker 1: 40worker 2: 35worker 3: 35 |
B. |
worker 1: 54worker 2: 28worker 3: 28 |
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C. |
worker 1: 44worker 2: 33worker 3: 33 |
D. |
worker 1: 14worker 2: 48worker 3: 48 |
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Hint |
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