Solve and Graph the Solution Set on a Number Line $| 7 x + 9 | + 1 < 7$

Multiple Choice

Solve and graph the solution set on a number line.
- $| 7 x + 9 | + 1 < 7$

A) $\left( - \infty , - \frac { 15 } { 7 } \right)$

B) $\left( - \frac { 3 } { 7 } , - \frac { 15 } { 7 } \right)$

C) $\left( - \frac { 15 } { 7 } , - \frac { 3 } { 7 } \right)$

D)