1. Convert the following expressions between exponential and logarithmic form. a. 2401 = 74 b. a = logb c

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 9PT: Solve for x by converting the logarithmic equation log17(x)=2 to exponential form.
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12. Why must the base of a logarithm be positive?
13. Why can we not calculate the logarithm of a negative number?
14. Rod says that he is thinking of a one variable exponential or logarithmic equation that
has the following characteristics:
a. has solutions x 1 and x = 2
b. does not contain the digit "3"
c. contains the number -12.
What are two different equations that Rod could be thinking of? Are those the only
possible answers?
15. Solve, rounding final answers to three decimals where appropriate, = 2(6x²-²)
5x
√5
16. Solve, rounding to three decimals where appropriate, logx-4(3x + 1) = 2
Transcribed Image Text:or screenshot in your solution. 12. Why must the base of a logarithm be positive? 13. Why can we not calculate the logarithm of a negative number? 14. Rod says that he is thinking of a one variable exponential or logarithmic equation that has the following characteristics: a. has solutions x 1 and x = 2 b. does not contain the digit "3" c. contains the number -12. What are two different equations that Rod could be thinking of? Are those the only possible answers? 15. Solve, rounding final answers to three decimals where appropriate, = 2(6x²-²) 5x √5 16. Solve, rounding to three decimals where appropriate, logx-4(3x + 1) = 2
1. Convert the following expressions between exponential and logarithmic form.
a. 2401 = 74
b.
= logb c
C
a.
b.
a =
2. Solve for x. Give your answer to three decimal places where appropriate.
x = log 21
x = log22 10 000
C.
2x = 23
d. x⁹ = 1024
e.
5 = logx 25
f. 3.5 = log36 X
3. Use the properties of logarithms to solve the following equations.
a. M = log₁1 (11²¹)
b. 4log4 (57) = X
C. X = log100 1000
4. Solve for the unknown using a method of your choice.
a. 511x+23 1257x
b. 22 123
C. 3x+5 + 3x = 177876
=
-log[(x − 2)] ₁
5. Describe the transformations on the logarithmic function g(x) = -
+9
6. Write the equation of a logarithmic function that has been vertically stretched by 4,
reflected in the x-axis, horizontally compressed by 1/9, moved 11 units up and 12 units
left. Justify your answer.
7. Ethan bought a new car worth $54,000. After 5 years, the car was worth $28,497.52.
Calculate the annual depreciation rate of Ethan's car.
8. The hydrogen ion concentration of a lemon is about 0.02. What is its pH?
9. How do the intensities of a magnitude 6.0 earthquake and a magnitude 2.9 earthquake
compare?
10. Using logarithm properties there are multiple ways of expressing the same
transformations on a parent function. Given g(x) = 8 log[2(x)], find equivalent functions
in the following forms. Round values to 4 decimal places where appropriate.
a. g(x) = log(x) + c
b. g(x) = logb[k(x)]
c. g(x) = log[k (x)]
11. Not all logarithmic and exponential equations can be solved algebraically. Use
technology to solve the equation 32x-³ = log₂ (2x) to 4 decimal places. Include a sketch
Transcribed Image Text:1. Convert the following expressions between exponential and logarithmic form. a. 2401 = 74 b. = logb c C a. b. a = 2. Solve for x. Give your answer to three decimal places where appropriate. x = log 21 x = log22 10 000 C. 2x = 23 d. x⁹ = 1024 e. 5 = logx 25 f. 3.5 = log36 X 3. Use the properties of logarithms to solve the following equations. a. M = log₁1 (11²¹) b. 4log4 (57) = X C. X = log100 1000 4. Solve for the unknown using a method of your choice. a. 511x+23 1257x b. 22 123 C. 3x+5 + 3x = 177876 = -log[(x − 2)] ₁ 5. Describe the transformations on the logarithmic function g(x) = - +9 6. Write the equation of a logarithmic function that has been vertically stretched by 4, reflected in the x-axis, horizontally compressed by 1/9, moved 11 units up and 12 units left. Justify your answer. 7. Ethan bought a new car worth $54,000. After 5 years, the car was worth $28,497.52. Calculate the annual depreciation rate of Ethan's car. 8. The hydrogen ion concentration of a lemon is about 0.02. What is its pH? 9. How do the intensities of a magnitude 6.0 earthquake and a magnitude 2.9 earthquake compare? 10. Using logarithm properties there are multiple ways of expressing the same transformations on a parent function. Given g(x) = 8 log[2(x)], find equivalent functions in the following forms. Round values to 4 decimal places where appropriate. a. g(x) = log(x) + c b. g(x) = logb[k(x)] c. g(x) = log[k (x)] 11. Not all logarithmic and exponential equations can be solved algebraically. Use technology to solve the equation 32x-³ = log₂ (2x) to 4 decimal places. Include a sketch
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