You need k by itself, so the only way to do that is to divide both sides by 5
Answer:
The graph increases
Step-by-step explanation:
P(z < x) = 0.6064 - 0.5 = 0.1064
From the normal distribution table
P(z < 0.27) = 0.1064
Therefore the z-score is 0.27
I can't explain it very well for you, sorry.