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SOLVING INEQUALITIES #5--KEY

Directions:  In the following inequalities, solve for x.  Show your steps and write your answer in the space provided.

Examples:                                 x - 11 > -5                               -2x + 10 <  100

+ 11    +11                                   +  10      +10

x  >  6                                         -2x <  110

-2       -2

x  > -55

1)  8x  -  40  <  120                             2)  16x  -  420  >  -100                        3)  -5x  - 30  >  80

x  <  20                                                      x  >  20                                                x  <  -22

4)  x  -  20  <  180                               5)  -2x  -  15  >  90                              6)  25x  -  150   <  550

x  <  200                                                         x  <  -52.5                                            x  <  28

7)  -4x  -  20  <  100                            8)  10x  -  30  >  360                           9)  10x  -  25  <  625

x  > -30                                                     x  >  39                                                x  <  65

10)  -20x  -  200  <  1,000                   11)  100x  -  670  >  -670                    12)  5x -  25  <  225

x  >  -60                                                           x  >  0                                      x  <  50