For the table, identify the independent and dependent variables. Explain the relationship using words, and an equation (equation example: C = 2s + 20).
Number of Snacks
Purchased, “s”
Total Cost,
“C”
0 $18
1 $21
2 $24
3 $27
In this table, the independent variable is the number of snacks purchased, denoted by "s." The dependent variable is the total cost, denoted by "C."
The relationship between the number of snacks purchased and the total cost can be explained as follows: As the number of snacks purchased increases, the total cost also increases.
To represent the relationship mathematically, we can use the equation C = 3s + 18. This equation shows that the total cost (C) is equal to three times the number of snacks purchased (s), plus an additional constant of 18.