Lesson 3

Are You Ready?

Complete these questions. If you experience difficulty and need help, visit Refresher or contact your teacher.

1. What is an arithmetic sequence? Answer
   
   
2. Consider the arithmetic sequence 17, 21, 25, 29, ….
   
   Determine the following values.
   
   
   1. tn Answer
      
      
   2. t20 Answer
      
      
   3. n when tn = 137 Answer
      
      
3. Rearrange the general term tn = a + (n − 1)d for each of the following variables.
   
   
   1. a Answer
      
      
   2. n Answer
      
      
   3. d Answer
      
      
4. What is a system of equations? Answer
   
   
5. Solve the following system of equations.
   
   
   1. Answer
      
      
   2. Answer

How did the questions go? Depending on your answer, skip forward to Discover or work through Refresher.