In the given figure, each box represents a function machine. A function machine illustrates what it does with the input.Which of the following statements is correct?

1307-14

  • A

    $z=2 x+3$

  • B

    $z=2(x+3)$

  • C

    $z=\sqrt{2 x+3}$

  • D

    $z =\sqrt{2( x +3)}$

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