Information about Test 3

• Reminder: There is a test on Wednesday, November 4. It will take the full 50 minutes and covers Chapter 3, Section 5 and Chapter 7, Section 1.

• The test consists almost entirely of word problems.

• As usual, you will need to give both exact answers and decimal approximations. You will need a calculator that can compute logarithmic functions and exponentials.

• You should be familiar with the following topics:
  • interest compounded n times per year, interest compounded continuously,

  • exponential growth and decay (main examples were population growth and radioactive decay) --- Here you must be able to find the formula. That is, given that y = y_0*e^kt and some additional data, be able to solve for k. (as in exercises 37 and 45).

  • logarithmic models (not discussed in class but present in the homework)

  • logistic models

  • solving systems of equations algebraically (using substitution) and the geometric meaning of this problem.