Here is my answer, hope to help you
 
        
        
        
Answer:
its kinda dificult to explain (easier to show) but ill do my best 
Step-by-step explanation:
so for part a you wanna start from the bottom (min) and go acros to the line above 1 then  go three lines up for cookies. you should be on 3, 1 
for part b its c lin decorates 21 cookies in 7 min
 
        
             
        
        
        
I’m not sure, but I think you divide 360 by each one of those angles.
        
             
        
        
        
It is 18 because the radius is half the diameter and 9 x 2 = 18.