3 A store sells one box of six pencils for $1. Which graph represents the relationship between the total cost and the total number of pencils sold?
Pencils
Pendils
10
10
9
7
A
Total Cost (dollars)
c
Total Cost (dollars)
0
0
3 6 9 12 15 18 21 24 27 30
Number of Pencils
Pencils
3 6 9 12 15 18 21 24 27 30
Number of Pendils
Pencils
30
27
24
21
18
15
Total Cost (dollars)
B
30
27
24
21
18
15
Total Cost (dollars)
.
0 1 2 3 4 5 6 7 8 9 10
Number of Pencils
0 1 2 3 4 5 6 7 8 9 10
Number of Pendils