For the shape below, if side BD = 29 and side AC = 3x - 4, find x.

Given :
a rectangle is given as below
where BD = 29 and AC = 3x - 4.
Find:
we have to find x.
Explanation:
since opposite sides of a rectangle are equal.
Therefore BD = AC
29 = 3x - 4
3x = 29 + 4
3x = 33
x = 33/3
x = 11
Therefore, the value of x is 11.
Hence, the correct option is B.