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Copyright © by Holt, Rinehart and Winston. 1 Holt Algebra 2 All rights reserved. Name Date Class LESSON 7-5 Practice A Exponential and Logarithmic Equations and Inequalities Solve and check. The first one is done for you. 1. 4 2x 6 2. 8 2x 5 48 3. 4 x 2 20 log 4 2x log 6 log 8 2x 5 log 48 log 4 x 2 log 20 2x log 4 log 6 2x 5 log 8 log 48 2x log 6 _____ log 4 1.29 x 0.645 x 3.43 x 0.161 4. 3 5x 27 2x 1 5. 36 x 2 6 4x 6. 5 5x 6 50 x 3 x 2 x 1.686 Solve. 7. log 2 x 7 21 8. log 5 x 3 15 9. log 6 x 4 2 2 7log 2 x 21 log 2 x 3 x 8 x 3125 x 10 or x 2 10. log x log 9 3 11. log x log 4 1 12. log x 6 log 5x 2 9000 x x 2.5 x 2 log 10 x __ 9 3 10 3 x __ 9 1000 x __ 9

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  • Copyright by Holt, Rinehart and Winston. 1 Holt Algebra 2All rights reserved.

    Name Date Class

    LESSON

    7-5Practice AExponential and Logarithmic Equations and Inequalities

    Solve and check. The first one is done for you. 1. 4 2x 6 2. 8 2x 5 48 3. 4 x 2 20

    log 4 2x log 6 log 8 2x 5 log 48 log 4 x 2 log 20

    2x log 4 log 6 2x 5 log 8 log 48

    2x log 6 _____ log 4 1.29

    x 0.645

    x 3.43

    x 0.161

    4. 3 5x 2 7 2x 1 5. 3 6 x 2 6 4x 6. 5 5x 6 50

    x 3

    x 2

    x 1.686

    Solve. 7. lo g 2 x 7 21 8. lo g 5 x 3 15 9. lo g 6 x 4 2 2

    7lo g 2 x 21

    lo g 2 x 3

    x 8

    x 3125

    x 10 or x 2

    10. log x log 9 3 11. log x log 4 1 12. log x 6 log 5x 2

    9000 x

    x 2.5

    x 2

    log10 x __ 9 3 10 3 x __ 9

    1000 x __ 9

    A2_IDEA_PA0705 1A2_IDEA_PA0705 1 4/11/06 4:14:31 PM4/11/06 4:14:31 PMProcess BlackProcess Black

  • Copyright by Holt, Rinehart and Winston. 1 Holt Algebra 2All rights reserved.

    Name Date Class

    LESSON

    7-5Practice AExponential and Logarithmic Equations and Inequalities

    Solve and check. The first one is done for you. 1. 4 2x 6 2. 8 2x 5 48 3. 4 x 2 20

    log 4 2x log 6 log 8 2x 5 log 48 log 4 x 2 log 20

    2x log 4 log 6 2x 5 log 8 log 48

    2x log 6 _____ log 4 1.29

    x 0.645

    x 3.43

    x 0.161

    4. 3 5x 2 7 2x 1 5. 3 6 x 2 6 4x 6. 5 5x 6 50

    x 3

    x 2

    x 1.686

    Solve. 7. lo g 2 x 7 21 8. lo g 5 x 3 15 9. lo g 6 x 4 2 2

    7lo g 2 x 21

    lo g 2 x 3

    x 8

    x 3125

    x 10 or x 2

    10. log x log 9 3 11. log x log 4 1 12. log x 6 log 5x 2

    9000 x

    x 2.5

    x 2

    log10 x __ 9 3 10 3 x __ 9

    1000 x __ 9

    A2_IDEA_PA0705 1A2_IDEA_PA0705 1 4/11/06 4:14:17 PM4/11/06 4:14:17 PM