I think the correct answer is
C) Suki's method is best because it uses a random sample
Glad I could help, and good luck!
AnonymousGiantsFan
15. 
Step 1: Distribute the subtraction sign to all the numbers in the second set of parentheses...


Step 2: Combine like terms (
's go with
's)




Step 3: Combine like terms (
's go with
's)




Step 4: Combine like terms (normal numbers go with normal numbers)

1 + 2
3

You were correct!
16. 
I don't really know how to explain this one but I got: (7m-6n)(7m-6n)
30+18 or 1x48 or 2x24 or 3x16 or 4x 12 or 6x8
Answer:
27 and 153 degrees
Step-by-step explanation:
Delta math
These are tricky to understand, but we need to know the sum of 'p' and 'r' to be times'd by 5, so we come up with the expression (p+r)5.