Answer:
-3.25 Didn't see the whole paper so correct me if I'm wrong.
Step-by-step explanation:
−2.5+0.25+−1.25+−1.5
+1.25+0.5=-3.25
Answer:
100,000,000 goes 10 times into 1,000,000,000
The perimeter of a triangle is the sum of all side lengths of the triangle. The numerical expression for the perimeter of Stephanie's triangle is: 
Let the sides of Juan's triangle be x, y and z. So:

The perimeter (J) of Juan's triangle is calculated by adding all sides.
So:

This gives:


From the question, we understand that:
The perimeter (S) of Stephanie's triangle is half that of Juan.
This means that:

Substitute 25 for J

Hence, the numerical expression for the perimeter of Stephanie's triangle is: 
Read more about perimeters at:
brainly.com/question/11957651
Hmmm I think either D or C