Name __________________

1. ___ All real numbers are integers.
   1. true
   2. false
2. ___ All counting numbers are real.
   1. true
   2. false
3. Using set notation, write: the natural numbers
   
   
   
4. Graph on the number line: X + 1 ≤ -1
   
   
   
5. Perform the operation: (-2/5)⁴
   
   
   
6. Perform the operation: (- 1/3 + 1/2) ^-1
   
   
   
7. Solve for x: y = (1/3)x + 10
   
   
   
8. Solve for x: x/2 + 1/3 = 2
   
   
   
9. The sum of 3 consequetive EVEN numbers is 216. What are those numbers? Show your work.
   
   
   
10. 36 is what percent of 150?
    
    
    
11. Solve for x: 4x -20 = 2(-x + 30)
    
    
    
12. Graph y = 2x + 2
    
    
    
13. Graph x -y = 5, what is the slope? the y intercept?
    
    
    
14. Graph(sketch) x = 5
    
    
    
15. Graph(sketch) y = -1 / (x - 2)
    
    
    
16. Write the equation of a line going through (0,1) and (3,5).
    
    
    
17. What is the domain and range of y = x ² + 3 ?
    
    
    
18. Graph y = 2|x| + 2 .
    
    
    
19. Solve the system of equations by elimination:
    X - Y = 1
    X + Y = 3
    
    
    
    
    
    
    
    
20. Pablo has 1000 kilos of pure cocaine. He wants to dilute it to 20% for distribution on the street. How much sugar must he use? Solve as a system of equations. Show the steps.