Answer
The two answer choices that complete the area model are 3k and -24.
Step-by-step explanation
The area of a rectangle is given as
Area = L × B
L = Length of the rectangle.
B = Breadth of the rectangle.
For the first rectangle,
Area = 9k
Length = ?
Breadth = 3
9k = L × 3
3L = 9k
Divide both sides by 3
(3L/3) = (9k/3)
L = 3k
For the second triangle,
Area = ?
Length = -8
Breadth = 3
Area = -8 × 3 = -24
Hope this Helps!!!