String a is 35 cm.....string b is 5 times as long as string a.....
so string b is 5(35) = 175 cm....both are needed....
175 + 35 = 210 cm for 1 bottle
for 17 bottles...
17 * 210 = 3570 cm <== 3570 cm are needed for 17 bottles
        
                    
             
        
        
        
She is 3 years older than her brother and has (x+3) in the equation means that x is being used as her brothers age. (She is adding 3 to her brothers age)
The answer is Amy's brother's age.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
3x+6=12
 -6. -6
3x=6
Divid three by both sides.
X=2 
Each penicillin cost 2 dollars 
 
        
             
        
        
        
1) Find the value of x and y.
2) Then use the Order of Operations to help you out with the computation.