Answer:
1: 216 selections
2: 120 selections
Step-by-step explanation:
1:
we have 6 different colors and we can choose the same color repeatedly, so for each of the 3 dogs, we have 6 possibilities, so the number of combinations is 6*6*6 = 216 selections.
2:
we have 6 different colors and we can't repeat a color, so the first collar has 6 possibilities, the second has 5 possibilities (one color was already chosen), and the third collar has 4 possibilities (two already chosen), so the number of selections is 6*5*4 = 120.
 
        
             
        
        
        
Answer:
You can do 12/12 8/8 10/10 3/3 and 2/2 all equal to 6/6 all in different ways.
Step-by-step explanation:
 
        
                    
             
        
        
        
The best answer to this question is quadratic. The model that can be seen in a scatterplot wherein the dots line up on a graph in a curvy manner would be the quadratic model. 
Additional info: If the dots are forming a straight lne, it's linear. If it shoots up, then it's an exponential one.