a state park charges $5 per car plus $1 per person as an admission fee. the total charged for a car with x people is f(x)=x+5. how will the graph of this function change if the per car charge is changed to $8 per car?
A. The line will shift vertically down by $3
B. the line will shift vertically up by $3.
C. The line will shirt vertically up by $8.
D. The line will shift vertically down by $8.