Answer:
Equation: P(w) = 4w + 8
Step-by-step explanation:
The step is zero. That and being told that the relationship is linear.
The general equation is P(w) = mw + y intercept.
When w = 0 then P(w) = 8
The only way that can happen is when P(w) = 0 + y intercept
y intercept = 8 because P(w) = 8
So far what we have is P(W) = mx + 8 So you are starting with 8 rats.
Now suppose w = 2. The number of rats P(2) that you get is 16
So you are solving for m.
16 = m*2 + 8 Subtract 8 from both sides
16 - 8 = 2*m + 8 - 8 Combine
8 = 2m Divide by 2
8/2 = 2m/2
m = 4
