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1. |
Simplify  |
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A. |
315 |
B. |
 |
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C. |
15 |
D. |
 |
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Hint |
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2. |
Solve 2x+4 = 22x+5. |
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A. |
-4 |
B. |
-1 |
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C. |
-3 |
D. |
-2 |
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Hint |
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3. |
Solve logb 36 = 2 |
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A. |
-6, 6 |
B. |
-6 |
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C. |
6 |
D. |
18 |
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Hint |
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4. |
If  and  , find the approximate value of log2 15. |
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A. |
3.9069 |
B. |
3.6802 |
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C. |
1.4649 |
D. |
0.7369 |
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Hint |
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5. |
Finance If $500 is deposited in an account paying 5.25% interest compounded continuously, find the amount in the account after 3 years. |
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A. |
$427.14 |
B. |
$555.36 |
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C. |
$585.29 |
D. |
$616.84 |
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Hint |
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6. |
Solve 3x + 4 = 7x - 1 to three decimal places. |
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A. |
2.397 |
B. |
7.483 |
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C. |
-1.993 |
D. |
1.254 |
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Hint |
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7. |
Solve log 3 x < 4. Check your solution. |
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A. |
x < 64 |
B. |
x < 81 |
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C. |
0 < x < 64 |
D. |
0 < x < 81 |
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Hint |
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8. |
Use log 3 4  1.26 to approximate the value of log 3 108. |
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A. |
36 |
B. |
4.26 |
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C. |
2.38 |
D. |
3.78 |
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Hint |
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9. |
Solve 62x > 5x + 2. |
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A. |
x > 1.82 |
B. |
x > 0.82 |
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C. |
x > 1.63 |
D. |
x > 0.85 |
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Hint |
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10. |
Solve 3e-2x = 5. |
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A. |
0.51 |
B. |
–0.51 |
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C. |
–0.26 |
D. |
0.26 |
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Hint |
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11. |
A Mickey Mantle rookie card appreciates in value 2% every year. How much was it worth in 1990 if it is worth $35,000 in 2000? |
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A. |
$42,665 |
B. |
$5653 |
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C. |
$28, 712 |
D. |
$216,711 |
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Hint |
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12. |
Two cities have insect problems. The insects in City A increase exponentially according to the equation y = 120,000e0.04t. The insects in City B increase exponentially according to the equation y = 90,000e0.08t. In 15 years, which city will have more insects, and by approximately how much? |
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A. |
City B, by about 80,000 |
B. |
City A, by about 30,000 |
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C. |
City A, by about 80,000 |
D. |
City B, by about 30,000 |
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Hint |
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