K = 5 or k = 3
Hope it helps-,-
Answer: A. 0.2
Step-by-step explanation:
Probability for any event = 
Three flavors of juice are offered at a school cafeteria.
The given table:
Orange Grape Cherry
51 30 69
Total juices = 51+30+69 =150
Now, the probability that a student who bought juice chosen at random purchased the grape flavor= 

Hence, the correct option is A.
Answer: the slope of the line is 4