Answer:
The counting principle lets you multiply the number of options per category to find the total number of possible outcomes. 
Step-by-step explanation:
So the first one.
 
        
                    
             
        
        
        
Answer: Light waves
Step-by-step explanation:
Used in the usual sense, radiant energy is just light. When you turn on your electric stove unit, it heats up and emits radio waves, infrared waves, and visible light waves. All of these waves are just light with different frequencies.
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 40$
Step-by-step explanation: before the mowing 20$ if half is on the game before game would be 40