Answer:
a,e,c,b,d 
Step-by-step explanation:
i think that is it but im not completly sure
 
        
                    
             
        
        
        
F(x)=y=the amount of money, in dollars , that Kad had after she bought the tickets.
x=price of one ticket
f(x)=-3x+36.75     or  y=-3x+36.75
        
             
        
        
        
Answer:
Given that: 
 and
 and 
if a , a+ commutator, it obeys 
First find:

                 = 
Now;

               =
therefore,  which implies the operators a and a+ are commutators.
 which implies the operators a and a+ are commutators.    
 
        
             
        
        
        
Y = 1.25x + 30 <== ur function
for 3 hrs.....x = 3
y = 1.25(3) + 30
y = 3.75 + 30
y = 33.75 <=== for 3 hrs