Answer:
they are not proportional 
 
        
                    
             
        
        
        
Answer:
Anna is 41 years old.
Step-by-step explanation:
Easiest way to do this is by building a equation,
Lest say Anna's age is  .
.
Then as Peter is 3 years older than Anna Peter's age should be  .
.
Then the combined ages of the two people is given as 85. So we can write an equation as,



 (deducting 3 from both sides of the equation)
 (deducting 3 from both sides of the equation)


As we originally took Anna;s age as 
We can say Anna is 41 years old.
 
        
             
        
        
        
The total bill (before tax and tip) = $90
Tax = 6% = 0.06
 0.06 x $90 = $5.4
Tip = 20% = 0.20
0.20 x $90 = $18
$90 + $18 + $5.4 = $113.4 (Answer)
 
        
                    
             
        
        
        
Answer:
not sure if its a song or not but you do you, gg <3
 
        
                    
             
        
        
        
Answer:
21
Step-by-step explanation: