$\frac{11}{4}-a\ =3$  

28. What is the value of a in the equation above?

29. What is the value of x in the equation  $10=5x−5$  ?

30. Rachel is now 11 years old. Five years ago, Lily was twice as old as Rachel. How old is Lily now?

31. If n is an integer, which of the following must be odd?

32. When z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8 ?

33. If the price of a stock increases by 40% and then by an additional 25%, by what percentage has the price increased from its original value?

34. If  $a+2b+2c=5$ and $a+2b+3c=5$  , what is the value of  $a+2b+4c$   ?

35. If  $a^2−25=a^2−b$ , then what is the value of b ?

36. A computer programmer receives a salary of $100 a day, plus $0.05 for each line of code that she writes. If this is her only income, which of the following expressions represents the number of dollars she would be paid for a day that she wrote n lines of code?

37. If  $6z−1=−37$ , then z =

38. What is the value of  $\frac{m}{m^2-m}$  if  $m=-5$  ?

39. Which of the following indicates that n is less than double the value of m and that n is greater than 1 ?

40. If  $50−xy=75$ and $y=−5$ , what is the value of x ?

41. Simplify the following inequality:  $x−20>20−x$  

42. If  $a=4,b=−7,c=−3\ and\ d=−9$  , then  $|a+b+c+d|−d=$  

43. Which region on the number line above is the set of all values of  $-\frac{x}{3}$  , where  $−6<x<6$  ?

44. If y > 3, what is the value of n ?

45. If  $a<b<c<0$ , then which of the following must be true?
I.  $a+b<b+c$  
II.  $c−a>0$  
III.  $a<b+c$  

46. If  $x=7$ , what is the value of  $(x−1)+(x−2)+(x−3)+...+(x−x)$  ?