Add n on both sides:
3m = km - 8 + n
Subtract km on both sides:
3m - km = n - 8
Factor the Left-Hand Side:
m(3 - k) = n - 8
Divide both sides by (3 - k):
m = (n - 8) / (3 - k)
Answer:
graph B
Step-by-step explanation:
the interval between the two runs is short compare to graph A
If
is a factor of a polynomial
then,
is its root.
So
is a root of 

7^2+8^2=113
the answer is sqrt(113)