What do you pay for a pack of cigarettes?
$
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
5.75
6.00
How many packs do you smoke in a week?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
$