Answer:
362,880
Step-by-step explanation:
9*8*7*6*5*4*3*2*1=362,880. You multiply the number of players, but subtract one each time. 
 
        
                    
             
        
        
        
Answer:
17x and 3x
Step-by-step explanation:
like terms are terms that have the same variables and powers. The coefficients do not need to match. Unlike terms are two or more terms that are not like terms, i.e. they do not have the same variables or powers. The order of the variables does not matter unless there is a power. 
 
        
             
        
        
        
Answer:
4c+4d+36
Step-by-step explanation:
multiply each separate variable inside the parenthesis by the number outside of parenthesis.
 
        
             
        
        
        
Answer:
He's correct.
Step-by-step explanation:
As long as there is no change in sign of the variables.
 
        
                    
             
        
        
        
2 kg = 1.5 
1 kg is half of 2 kg, therefore, half the price. Half of 1.5 dollors = 75 cents