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1. |
Simplify  |
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A. |
 |
B. |
 |
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C. |
x2 |
D. |
x4 |
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Hint |
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2. |
Solve log2 (x + 4) = log2 (x2 + 2). |
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A. |
no solution |
B. |
2 |
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C. |
0 |
D. |
-1, 2 |
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Hint |
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3. |
If  and  , find the approximate value of log2 15. |
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A. |
0.7369 |
B. |
1.4649 |
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C. |
3.9069 |
D. |
3.6802 |
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Hint |
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4. |
Find ln 6.21 to four decimal places. |
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A. |
1.8262 |
B. |
497.7013 |
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C. |
0.7931 |
D. |
2.7183 |
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Hint |
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5. |
Find  to three decimal places. |
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A. |
3.1355 |
B. |
1.6113 |
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C. |
2.3225 |
D. |
1.3617 |
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Hint |
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6. |
Solve 32x -1 = 25.6 to three decimal places. |
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A. |
0.739 |
B. |
4.767 |
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C. |
1.204 |
D. |
1.976 |
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Hint |
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7. |
Real Estate Julie bought a house for $100,000 five years ago. If the value of the house has appreciated 5% per year, how much is it worth now? |
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A. |
$125,000.00 |
B. |
$127,628.16 |
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C. |
$119,643.57 |
D. |
$77,378.09 |
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Hint |
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8. |
Which of the following represents exponential decay? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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9. |
Solve log 5 (5x – 2) > log 5 (2x + 10). |
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A. |
0 < x < 4 |
B. |
x > 625 |
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C. |
x > 4 |
D. |
x < 4 |
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Hint |
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10. |
Solve the equation 2 log 6 x – log 6 5 = log 6 125. |
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A. |
312.5 |
B. |
–25 |
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C. |
no solution |
D. |
25 |
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Hint |
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11. |
Solve 4 – 2e4x = 1. |
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A. |
0.10 |
B. |
–0.10 |
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C. |
0.41 |
D. |
–0.41 |
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Hint |
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12. |
A Mickey Mantle rookie card appreciates in value 2% every year. If it is worth $35,000 in 2000, when will it be worth $100,000? |
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A. |
2053 |
B. |
2065 |
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C. |
2093 |
D. |
2043 |
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Hint |
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