The correct option is B 8 more than 4 times a number x
a) 4 more than 4 times a number x = 4x + 4.
b) 8 more than 4 times a number x = 4x + 8.
c) 8 less than 4 times a number x = 4x - 8.
d) 4 less than 8 times a number x = 8x - 4.
Thus, option (b) is correct.