Answer:
A.
Step-by-step explanation:
Hi,

There are no other simple steps to reduce the square root of one hundred and sixty-three.
The actual square root value is ≈12.767145334803704
But we have taken only significant figures and it is as 12.76.
Hope it helps! :)
Answer:
y=(1/3)x-2
Step-by-step explanation:
Plug into equation of y=mx+b
y=(1/3)x-2
Cow : 9 x 10^2 = 9 * 100 = 900
whale : 1.8 x 10^5 = 1.8 * 100,000 = 180,000
180,000/900 = 200
The blue whale has about 200 times more mass <==
1/4 * x + 1/4 * 4
(the * are multiplication signs)