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Solve for a: 1/9*|5a + 2| < 1.  Express your answer in interval notation.

 Jul 4, 2021
 #1
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|5a+2| <9

 

if 5a+2 is positive            5a+2 < 9

                                           a < 7/5

 

if 5a+2 is negative          5a+2 > -9

                                           a >  -11/5

 

 

-11/5 < a < 7/5               or     ( -11/5 , 7/5)

 Jul 4, 2021

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