1) Gathering the data
1 batch of cookies: 5 cups of flour and 2 teaspoons of vanilla
15 cups of flour and 6 teaspoons.
Writing that as a Linear system, we can see a proportionality where k=3
5c +2t = 1
15c +6t = 3
2)
Claim
Flour | Vanilla
5 2
10 4
15 3