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Question
$${\text{If }}\,\sqrt {1 + \frac{x}{9}} = \frac{{13}}{3}{\text{,}}$$    then the value of x is?
Options:
A .  $$\frac{{1439}}{9}$$
B .  160
C .  $$\frac{{1443}}{9}$$
D .  169
Answer: Option B

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