Answer:
First craft project part:
a.
If it was 10 inches, the red ribbon would be 3 inches long
10-7=3
If it was 27 inches, the red ribbon would be 20 inches long
27-7=20
If it was x inches, the red ribbon would be x-7 inches long
x-7=x-7
b.
12+7=19
The blue ribbon would be 19 inches.
Second books with Mai and Tyler:
If Tyler has 15 books, then Mai has 5 books.
15/3=5
If Tyler has 21 books, then Mai has 7 books.
21/3=7
If Tyler has x books, then Mai has x/3 books.
x/3=x/3
Bottle that holds 24 oz:
a.
It represents the space in the bottle that is unfilled.
Srry... it's just too much