Answer:
x = 12
Step-by-step explanation:
their the same length so plug em equal to each other
x+5 = 2x-7
add 7 to both side to get x+12 = 2x
subtract x from both side to get x = 12
I think your answer is ( B )
Doing this so I can ask sorry
The length is 5 because 5 cubed equals 125.