1. If set D is a subset of set E, the which of the following is true?
*D n E = D
*D n E = E
*D n E = 0
2. What is the solution set of {x I x < -3} n {x I x > 5}
* all numbers except -3 and 5
*the numbers between -3 and 5
*the empty set
* all real numbers
3. Which of the following describes the graph of {x I 1 < x< 2}
*open circles on 1 and 2
*open circles on 1 and 2, arrows pointing out
*open circles on 1 and 2, line segment between
*no solution.
4. which of the following points satisfies the inequality 2x - 3y < 1?
*(-2,1)
*(1/2, 0)
*(2, -1)