The surface of the lake.
6
5
4
3
2
1
0   Here is the surface of the lake
-1
-2
-3
-4
-5 Here is the fish  
-6
        
             
        
        
        
Answer:
15 hip hop performances
12 ballet performances 
Step-by-step explanation:
5:4 (multiply by 3)
15:12 
 
        
             
        
        
        
Answer:
45
Step-by-step explanation:
*jjjjjjbjjjjjjjjjjjjjjjjjjjjjjjnnnnn
 
        
             
        
        
        
F(8x+5)^-1=0.2
(8+5)^-1=0.077
5^-1=0.2
8x^-1=0.125
0.125-0.2=-0.075/0.2-0.125=0.075