<span>The sections that it is in are
Classifying Quadrilaterals
Properties of Parallelograms
Special Parallelograms
Trapezoids and Kites
Placing Figures in the Coordinate Plane</span>
Answer:I think a is:78.3 since it would be the same and since 0 doesn't have a value.
I think b is: 139.5 because all you are doing is subtracting 287.1-147.6
Answer:
5
Step-by-step explanation:

Actually Welcome to the Concept of the Arithmetic Operation.
====> 5(3+6) + 5*3/ 5(4-1)
=====> 5(9) + 15 / 5(3)
=====> 45+15 / 15
=====> 60/15
======> 4
answer is 4