Practice problem
Solve ∣3x+9∣<4|3x+9|<4∣3x+9∣<4.
(−∞,−133 ]∪[−53 ,∞)(-\infty,-\frac{13}3\ ]\cup[-\frac53\ ,\infty)(−∞,−313 ]∪[−35 ,∞)
(−∞,−133 )∪(−53 ,∞)(-\infty,-\frac{13}3\ )\cup(-\frac53\ ,\infty)(−∞,−313 )∪(−35 ,∞)
[−133 ,−53 ][-\frac{13}3\ ,-\frac53\ ][−313 ,−35 ]
(−133 ,−53 )(-\frac{13}3\ ,-\frac53\ )(−313 ,−35 )
Type a concept, like “slope” or “photosynthesis”.
