#2 Has 1 Line of symmetry
The answer to your question is c
He can share his candy bars with 4 friends and have 1/2 a candy bar left over for himself.
(fog) (x) = (5x - 7) / (5x - 4)
The denominator cannot be zero so the domain is All real x except x = 4/5
27000 is halfway because the difference between them is 500. 500 divided by 2 is 250. 26750plus 250 is 27000