Find the Indicated Function and Write Its Domain in Interval $$r ( x ) = | - 3 x - 7 | , n ( x ) = x + 4 , ( r \circ n ) ( x ) = ?$$

question 331

Multiple Choice

Find the indicated function and write its domain in interval notation.
- $$r ( x ) = | - 3 x - 7 | , n ( x ) = x + 4 , ( r \circ n ) ( x ) = ?$$

• A) \(( r \circ n ) ( x ) = | - 3 x - 19 |\); domain: \(( - \infty , \infty )\)
• B) \(( r \circ n ) ( x ) = | - 3 x - 7 | + 4\); domain: \(( - \infty , \infty )\)
• C) \(( r \circ n ) ( x ) = | - 3 x - 19 | ;\) domain: \(\left( - \infty , - \frac { 19 } { 3 } \right)\)
• D) \(( r \circ n ) ( x ) = | - 3 x - 7 | + 4 ;\) domain: \(\left( - \infty , - \frac { 7 } { 3 } \right)\)

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