What? Need answers. Plus, I can tell that your are doing this in class. Bad idea.
So to find the answer u must multiply 20 x 5= 100
Answer: i'm pretty sure it's option A
0.50x-6=4
move -6 to the other side
sign changes from -6 to 6
0.50x-6+6= 4+6
0.50x= 10
divide by 0.50 for both sides
0.50/0.50x= 10/0.50
x= 20
Answer: x= 20
