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1. |
What is true about the graphs of y = 2x2 and y = -2x2? |
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A. |
y = 2x2 opens downward and y = -2x2 opens upward. |
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B. |
y = 2x2 opens upward and y = -2x2 opens downward. |
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C. |
y = 2x2 opens to the left and y = -2x2 opens to the right. |
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D. |
y = 2x2 opens to the right and y = -2x2 opens to the left. |
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Hint |
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2. |
Consider the function y = 2x2 + 3. Which ordered pairs from the set
{(-4, 35), (-3, 20), (-2, 11), (5, 52)} are solutions? |
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A. |
{(-4, 35), (5, 52)} |
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B. |
{(-2, 11), (-3, 20)} |
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C. |
{(-4, 35), (-3, 20)} |
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D. |
{(-4, 35), (-2, 11)} |
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Hint |
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3. |
What is the multiplicative inverse of x? |
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A. |
1 × x |
B. |
x × 1 |
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C. |
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D. |
x |
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Hint |
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4. |
Use the graph to find the solution to 35 = 20x + 3. |
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A. |
x = 1.6 |
B. |
x = 2.1 |
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C. |
x = 1.2 |
D. |
x = 2.5 |
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Hint |
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5. |
The currency in Poland is the zloty. On a particular day in October 2001, Cindy wanted to exchange $20 for zloty. The rule for converting zloty to U.S. dollars was D = 0.244Z, where D was the price in U.S. dollars and Z was the price in zloty. How much money, in Polish zloty, did Cindy receive? Use the graph below to help you. |
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A. |
75 zloty |
B. |
63 zloty |
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C. |
82 zloty |
D. |
90 zloty |
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Hint |
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