mult - HonorsPreCalTrig

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Multiple Choice

1.

Write in logarithmic form: 5 3 = 125 a) log

5

3 = 125 b) log

3

5 = 125 c) log

5

125 = 3 d) log

125

= 3 5

2.

Evaluate: log

4

(1/64) a) -3 b) 4 c) -4 d) 3

3.

Solve: log

10

x = 3 a) 1000 b) 10 c) 3 d) 9

4.

Express as a single logarithm: 2 log b

x + (1/2) log b

(x-1) - 4 log b

(2x+5) a) log b x 2 - 8x + 20 b) log

b

8x c) x 2 d) log b

(x 2 √(x-1) / (2x+5) 4 )

5.

Graph f(x) = -e x State the horizontal asymptote.

6.

Use your calculator to find the common logarithm: log 4321 a) 4.453 b) 3.636 c) 8.470 d) 41

7.

Use your calculator to find x when given log x: log x = 4.4180 a) 26181.83 b) 89437.43 c) 7438.52 d) 1423.45

8.

Use your calculator to find the natural logarithm: ln 8946 a) 43.453 b) 9.099 c) 987.987 d) 543.33

9.

Solve the exponential equation: 2e x = 12.4 a) 1.82 b) 4.52 c)1,000 d) 0.65

10.

Solve the logarithmic equation: ln (3t-4) - ln (t+1) = ln 2

a) 3/2 b) 6 c) 7/10 d) 11/9

11.

Evaluate and round to three decimal places: log

8

41 a) 5.345 b) 7.438 c) 2.049 d) 1.786

12.

At what rate of interest (to the nearest tenth of a percent) compounded annually will an investment of $200 grow to $350 in 5 years? a) 6.4 % b) 8.11% c) 10.3% d) 11.8%

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