Answer:
4 sets
Step-by-step explanation:
406 - 278 = 128
1 set = 40
2 sets = 80
3 sets = 120
4 sets = 160
3.2 sets = 128
Loss implies a negative change, so the integer will be -15.
The second choice is the answer
You need 12 square roots of 1764 ?
Why not find the square root of 1764 first (it's 42) and then take 12 of those ?
