Answer:
2A
Step-by-step explanation:

Answer:
-51
Step-by-step explanation:
Let's do order of operations.
10+8-70-(-1) <- We did negative 7 times 10.
18-70-(-1) <- We did 10 plus 18.
-52-(-1) <- We did 18 minus 70
When you open the () we get:
-52--1
Negative minus a negative equals a positive.
-52+1=
-51
I believe you would have to multiply both 25 and 20 and what ever number you get dived by 100 if the numbers to high multiply aging or subtract the number (if it's wrong I'm really not good at my math I'm sorry)