Help with 1-8 and 19-28

Lesson Check Do you know HOW? Do you UNDERSTAND? Write each equation in logarithmic form. 9. Vocabulary Determine whether each logarithm is a 1. 25 - 5- 2. 64 - 43 common logarithm. a. log, 1 b. log 64 C. log , 100 d. log, 5 3. 243 - 35 4. 25 - 52 10. Reasoning Explain how you could use an inverse Evaluate each logarithm. function to graph the logarithmic function y - logs 5. log, 8 6. logg 9 11. Compare and Contrast Compare the graph of y - log2 (x + 4) to the graph of y - log, r. How are 7. log- 49 8. 10g2 4 the graphs alike? How are they different? Practice and Problem-Solving Exercises A Practice Write each equation in logarithmic form. See Problem 1. Guided 12. 49 - 72 Practice To start, write the definition of logarithm. If x = by, then log