Answer:
52
Step-by-step explanation:
answer explained in the photo, divide the shape into 3 easy-to-calculate-area shapes, the sum of the rectangle's Areas is the shape's Area
The r variable outside the parentheses can multiply both the numbers in the parentheses.
This called distributing the r. We are using the distributive property.
The distributive property states that a(b + c) = ab + ac.
r(18 - 3) = 18r - 3r
So, (r * 18) - (r * 3) is the answer.
They messed up there has to be an 8 there for any recursive rule to work. otherwise, it would be 2