To find the initial value for the sequence defined by the points \( (0, 8) \), \( (1, 14.4) \), \( (2, 29.92) \), \( (3, 46.656) \), we can analyze the sequence values given. The initial value of the sequence corresponds to the first point \( (0, 8) \), where \( x = 0 \) and \( y = 8 \).
Thus, the initial value for the sequence is \( 8 \).