Nikita's value is 4 times less than Bettina's value. I believe this is the answer.
7 squared = 49 and 9 squared= 81 add up 49 and 81 and you get 130
Answer:

Step-by-step explanation:
The weight of an object is the magnitude of the force of gravity acting on the object. It is equal to the product between mass of the object (m) and acceleration of gravity (g):

In this problem, we have 100 sharks; the weight of each shark is

When we have n objects, the total weight of the n object is n times the weight of each object:

Therefore, since in this case
n = 100
The total weight of the 100 sharks is:

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