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Find the Domain of F f(x)=9x+4f ( x ) = \sqrt { 9 x + 4 }

Question 7

Multiple Choice

Find the domain of f.
- f(x) =9x+4f ( x ) = \sqrt { 9 x + 4 }


A) {x∣x≤−49}\left\{ x \mid x \leq - \frac { 4 } { 9 } \right\}
B) {x∣x≥49}\left\{ x \mid x \geq \frac { 4 } { 9 } \right\}
C) {x∣x>−49}\left\{ x \mid x > - \frac { 4 } { 9 } \right\}
D) {x∣x≥−49}\left\{ x \mid x \geq - \frac { 4 } { 9 } \right\}

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