The first thing we must do for this case is find the number of total guitarists.
 We have then:

 We now look for the relationship between the number of guitarists playing jazz alone to the total number of guitarists.
 We have then:
 
 Where,
 x: number of guitarists playing jazz alone
 From here, we clear the value of x.
 
 Then, the number of guitarists who play classical solo is:
 
 Answer:
 30 guitarists play classical solos in the contest
 
        
                    
             
        
        
        
Answer:
3,072m
Step-by-step explanation:
32 × 12× 8= 3,072 (This is only you are multiplying them all)
If you are trying to find the area then its: 384m
 
        
             
        
        
        
Answer:
413x6=345467
Step-by-step explanation:
 
        
             
        
        
        
An algebraic expression is, obviously, an expression with a variable.
"A number" would represent a variable, which, in this case, we'll use y.
So, 15 decreased by twice x.
15 - y x 2 = 
I hope this helped :)