The almond extract a remaining in an 8-oz bottle decreases by 1/6 oz for each batch b of waffle cookies made.
Aa-8(1/6)=b
Ba=8-1/6b
Ca-1/6b=8
D1/6a-8=b
Aa-8(1/6)=b
Ba=8-1/6b
Ca-1/6b=8
D1/6a-8=b