AnswersDHS Algebra 2 VSolving Logarithmic Equations using Technology

Solving Logarithmic Equations using Technology Answers

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1
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–2.8760–0.34770.71241.3738

A
–2.8760
B
–0.3477
C
0.7124
D
1.3738
2
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2.3219–0.4307–2.32190.4307

A
2.3219
B
–0.4307
C
–2.3219
D
0.4307
3

The expression is the result of applying the change of base formula to a logarithmic expression. Which could be the original expression?

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A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
4

Use the change of base formula to approximate the solution to log0.515 = 1 – 2x. Round to the nearest hundredth.

Question illustration
Answer:

2.45

5

Which graph shows the solution to the equation log2(3x – 1) = 2?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
6

Graph a system of equations to approximate the value of x, the rate of depreciation. Give your answer as a percent.

A
about 4%
B
about 13%
C
about 1.2%
D
cannot be determined
7

What are the approximate solutions of the equation? Check all that apply.

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
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Option D
8

Did you include the following in your solution?

A
Identify the system of equations that can be graphed to solve the problem.
B
Use the change of base formula.
C
Determine that the graphs of the two equations do not intersect.
D
Determine that Elsa is correct; the equation has no solution.
9

Question text not available

Answers:
Blank 1:-1.89
Blank 2:1.14
10

Solve log2x = log53 + 1 by graphing. Round to the nearest tenth.

Question illustration
Answer:

3.2

11

Solve log2(x – 1) = log12(x – 1) by graphing.x =

Answer:

2

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