Which expressions are equivalent to the one below? check all that apply.

10x
a. 50x/5x
b. 10 • 10x - 1
c. 10 • 10x + 1
d. 50x/5
e. (50/5)x
f. x5

A ) is not correct because x/x = 1 so you get 10 and not 10x
B) is not correct because 10*10x - 1 = 100x - 1 which is not 10x
C) simillar as B. Not correct
D) is correct. 50x/5 is same as 50/5*x = 10x
E) correct. Straight forward. 50/5 = 10 and when multiplied by x gets 10x
F) x5 or 5x however it is meant to be written is not 10x