1. Which interval containing the solution of
e8x + 2 = 3x ?
| A) -3 < x < 0 |
B) x < -3 |
C) 3 < x < 5 |
D) 0 < x < 3 |
E) x > 5 |
2. Find the sum of the root(s) of log(x - 3) =
1 - log (x)
| A) 3 |
B) 7 |
C) 5 |
D) -7 |
E) None |
3. If a radioactive substance has a half-life of 20-second, how long will it take
100-g to decay to 10-g? Round your answer to the nearest second.
| A) 66 second |
B) 200 second |
C) 50 second |
D) 30 second |
E) 25 second |
4. Suppose that you have made a deposit of $10,000 at local bank that pays an
annual interest rate of 10% compounded monthly. How long will take the amount to triple?
Round to the nearest year.
| A) 13 years |
B) 9 years |
C) 21 years |
D) 11 years |
E) 12 years |
5. Find the sum of the root(s) of ln(x - 2) +
ln(2x - 3) = 2 ln(x)
| A) 7 |
B) 1 |
C) 6 |
D) 3.5 |
E) None |
6. Which interval containing the root(s) of
log2 (x + 5) = 3 + log2 (x - 2) ?
| A) 0 < x < 2 |
B) 2 < x < 3.5 |
C) x < 0 |
D) 3.5 < x < 5 |
E) x > 5 |
7. Which interval containing the root(s) of
V
| A) x < 0 |
B) 0 < x < 2 |
C) x > 7 |
D) 5 < x < 7 |
E) 2 < x < 5 |
8. Solve for t:
9. The population of a town was 10,000 in 1990. If there were 15,000 residents in
1995, find the value of k in the growth-decay model. Round result to the nearest
hundredth.
| A) 2.03 |
B) 0.04 |
C) 0.08 |
D) 0.88 |
E) 1.70 |
10. If the power input to a device is pi and the power output if po,
the amount of decibels (dB) gained or lost in the device G is given by
 . If a certain device gives a power output of 1,000-W for an input of 50-W. Find the dB
gain. Round result to the nearest integer.
| A) 13 |
B) -13 |
C) 12 |
D) 10 |
E) -8 |
|
