Close Greengroce
Half kilo apple=1TL
Far Greengroce
1 kilo apple=1,5 TL
1 kilo apple=2TL 3 kilo apple=4,5TL
3 kilo apple=6TL Road =X TL
F(X)= X + 4,5 TL
She only pays six tl for she will go on
foot
X + 4,5 < 6
X < 1,5
So; If road Money less than 1.5Tl she has to go far greengroce.
X + 4,5 > 6
X > 1,5
If the road Money is more than 1.5Tl, she has to go the nearby greengroce.
X + 4, 5 = 6
X = 1,5