Answer:
f(4)= 3
Step-by-step explanation:
f ( x ) = 2 x - 5
then f(4)= 2(4)-5
f(4)= 8-5
f(4)= 3
 
        
                    
             
        
        
        
Answer: 

Explanation:
[ Step One ] Remove Parenthesis: (a) = a

[ Step Two ] Multiply: 

[ Step Three ] Apply Exponent Rule 

[ Step Four ] Apply Exponent Rule: 

[ 
 ]
➤ 

 
        
                    
             
        
        
        
Answer:
-3x = 7 .  
Step-by-step explanation:
-3x - 6 - 1 =
-3x - 7
Hope that helps!
 
        
                    
             
        
        
        
Answer:
The students points will decrease 10 points in 4 days 
Step-by-step explanation:
In 2 days he loses 5 points. So for 4 days all you have to do is double the amount of points because the amount of days have doubled 
 
        
             
        
        
        
Answer: 
490
Step-by-step:
90•5