help me, with steps too (if you want).

Answer:
(C) 2z + 1
Step-by-step explanation:
[tex] \frac{4acb}{3z} = \frac{8abc}{3x} [/tex]
[tex] \frac{1}{z} = \frac{2}{x} [/tex]
[tex]z = \frac{x}{2} [/tex]
[tex]x = 2z[/tex]
[tex]x + 1 = 2z + 1[/tex]
So C is the correct answer.