Answer:
275
Step-by-step explanation:
1000-725=275
 
        
             
        
        
        
Answer:
4 driveaways
Step-by-step explanation:
90 - 30 = 60
60 ÷ 15 = 4
 
        
             
        
        
        
Answer:
24 yellow strips 
Step-by-step explanation:
since you need two yellow for every blue, you need to double the total of blue to get the number of yellow that are needed. 
 
        
                    
             
        
        
        
4x + 9 = 2x - 1
4x - 2x = -1 - 9
2x = -10
x = -10/2
x = -5 <===
        
             
        
        
        
Answer:
x > -1
Step-by-step explanation:
Simplify both sides of the equation, then isolate the variable.