Chapter 7 Practice Test



Chapter 7 Practice Test Name___________________

Identify each function as modeling either exponential growth or exponential decay.

[pic] 2. [pic] 3. [pic]

Write an exponential equation to model each situation. Find the value of each function after 5 years.

4. A home worth $150,000 appreciates 1% each year.

5. A $12,500 car depreciates 9% each year.

6. A baseball card worth $50 increases 3% each year.

Use the appropriate compound interest formula to solve each equation.

7. You invest $20,000 in an account that earns 9% interest that gets compounded monthly. How much money will you have in 7 years?

8. You put $7500 into an account that gets its interest compounded continuously at a rate of 4%. How much money will you have in 5 years?

9. You invest $3,000 in account that earns its interest semi-annually at a rate of 7%. How much money will you have in 6 years?

Write each equation in logarithm form.

10. [pic] 11. [pic] 12. [pic]

Write each equation in exponential form.

13. [pic] 14. log 0.00001= -5 15. [pic]

Evaluate.

16. [pic] 17. [pic] 18. [pic] 19. [pic]

Write each logarithm expression as a single logarithm.

20. [pic] 21. [pic] 22. [pic]

Expand each logarithm expression.

23. [pic] 24. [pic] 25. [pic]

Solve each equation.

26. [pic] 27. [pic] 28. [pic]

29. [pic] 30. [pic] 31. [pic]

32. [pic] 33. [pic] 34. [pic]

35. [pic] 36. [pic] 37. [pic]

Graph the following equations.

38. [pic] 39. [pic]

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download