We have : 
s - 39⁰+ s - 9⁰ = s + 29⁰ 
s + s - s = 29⁰ + 9⁰ + 39⁰
s = 77⁰
Answer: 77⁰
Ok done. Thank to me :>
 
        
             
        
        
        
Answer:
Cost of Trumpets: $174
Cost of Clarinets: $149
Cost of Violins: $89
Step-by-step explanation:
Got it correct 
 
        
             
        
        
        
Answer:
7
Step-by-step explanation:
each way from 10 to 7 is 3 and 4 to 7 is 4
 
        
             
        
        
        
Answer:
Rebecca is 18
Step-by-step explanation:
18/6-3=0