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1. |
The cost function for a company to produce x items is y = 56 + 2x and the revenue function is y = 3.6x. Graph the system of equations, and find the break-even point. |
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A. |
45 items |
B. |
30 items |
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C. |
35 items |
D. |
40 items |
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Hint |
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2. |
The cost function for a company to produce x items is y = 22.5 + 2x and the revenue function is y = 2.5x. If the profit is the revenue minus the cost, what is the profit at the break-even point? |
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A. |
$75 |
B. |
$63 |
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C. |
$0 |
D. |
$112.50 |
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Hint |
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3. |
Solve the system of equations y = -x + 5 and y = -x - 10 by graphing. |
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A. |
no solution |
B. |
(5, 2) |
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C. |
(2, 5) |
D. |
None of these is correct. |
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Hint |
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4. |
Find the solution of the system y = 2.5x + 1.5 and -3x + y = 1. |
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A. |
(3, 1) |
B. |
(1, 4) |
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C. |
(4, 1) |
D. |
(2, -1) |
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Hint |
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5. |
Find the solution of the system y = -3x + 2 and y = -1.5x + 5. |
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A. |
(-1, 5) |
B. |
(2, 8) |
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C. |
(-2, 8) |
D. |
(-3, 9.5) |
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Hint |
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