Lesson 4

Are You Ready?

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

1.  
   1. What is 40% of 200? Answer
      
      
   2. 15 is 30% of what number? Answer
      
      
   3. An investment of $25 000 earns 7% interest per year. What is the simple interest earned on this investment after 1 yr? Answer
      
      
2. What is a sequence? Answer
   
   
3. For each arithmetic sequence, determine the general term and the value of t11.
   
   
   1. −9, −2, 5, 12, … Answer
      
      
   2. 400, 365, 330, 295, … Answer
      
      
4. What is the order of operations? Answer
   
   
5. Evaluate each of the following expressions.
   
   
   1. 3 + 2 × 5 Answer
      
      
   2. 300 × (5 − 1)2 Answer
      
      
   3. Answer

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