Since work = force * distance, the answer would 5*.5, which is 2.5 J
First combine like terms:
6n-2n = 4n
7n-2=4n
subtract 7n from both sides
7n-2=4n
-7n -7n
-2=-3n
divide -2 on both sides.
n=1.5
Just move the decimal twice to the right. So 11%
B. AC/EA = AB/DA because theyre equal slopes just different sizes