1. A patient is administered a 1,200-microgram dose of iodine-131. How much iodine-131 will be in the patient's system after 10 days, and after 16 days?

  2. Suppose you deposit $500 in an account with an annual interest rate of 8% compounded quarterly. Find an equation that gives the amount of money in the account after t years. Then find:

    (a) The amount of money in the account after 5 years.

    (b) The number of years it will take for the account to contain $1,000.

  3. Suppose you deposit $500 in an account with an annual interest rate of 8% compounded continuously. Find an equation that gives the amount of money after t years. Then find the amount of money in the account after 5 years.

  4. Find the inverse of .

  5. Graph the function and its inverse. Give the equation for the inverse.

  6. Solve .

  7. Graph the equation .

  8. Simplify .

  9. Write as a single logarithm: .

  10. Solve for x: .

  11. Find log 0.00523.

  12. Find x if log x = -2.4179.

  13. Use the properties of logarithms to expand the expression ln Ae5t.

  14. Solve for x: 25 2x + 1 = 15.

  15. Find log8 24.

  16. How long does it take for $5,000 to double if it is deposited in an account that yields 5% interest compounded once a year?
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