Answer: n = 0.25
Explanation:
If K = 100 - 4n, and k = 99, we can substitute k with 99 in the equation to get:
99 = 100 - 4n
We can then solve for n by isolating the variable n on one side of the equation:
99 - 100 = -4n
-1 = -4n
n = (-1)/(-4)
n = 0.25
Therefore, when k = 99, n = 0.25.