Answer:
5x+31
Step-by-step explanation:
f(g(x))
5(x+7) -4
5x+35-4
5x+31=f(g(x))
 
        
             
        
        
        
All you have to do is divide 3.5 by 5 and you should get 0.7. So she used 0.7 yards on one dress. Hope this helped :)
        
                    
             
        
        
        
Answer:
Third one
Step-by-step explanation:
30x would be 30 times the amount of fish (x)
+ 80y would be 80 times the amount of octopus captured (y)
- 15z would be subtracting 15 times the amount of crabs she captures
 
        
             
        
        
        
X = 2, y = -1  Answer = -1
x = 0, y = 2.5  Answer = -11.25
x = -1, y = -3   Answer = 14
x = 0.5, y = -0.1 (one tenths)  Answer = 0.44
x = 0.75 (three quarters), y = 0.4 (two fifths)  Answer = 1.665
x = 1.41 (sqareroot of 2), y = 1.41 (sqareroot of 2)  Answer = 9.17
I hope this helps!
        
             
        
        
        
X= balance
x+45+18+27-21-93 = x - 24 
<span>The change in the account is -24</span>