Answer: 109.5 
Step-by-step explanation: EACH year for three years would be 1095 if you  multiply 365 (each year) by 3 (the amount of years) and then divide that by 10. Im not entirely sure but I hope I helped 
 
        
             
        
        
        
Three thousand five hundred eight
        
                    
             
        
        
        
I believe it is positive so option 2
        
                    
             
        
        
        
9514 1404 393
Answer:
Step-by-step explanation:
Let a and s represent the prices of adult and student tickets, respectively.
   13a +12s = 211 . . . . . . ticket sales the first day
   5a +3s = 65 . . . . . . . ticket sales the second day
Subtracting the first equation from 4 times the second gives ...
   4(5a +3s) -(13a +12s) = 4(65) -(211)
   7a = 49 . . . . . . . simplify
   a = 7 . . . . . . . divide by 7
   5(7) +3s = 65 . . . . substitute into the second equation
   3s = 30 . . . . . . . subtract 35
   s = 10 . . . . . . . divide by 3
The price of one adult ticket is $7; the price of one student ticket is $10.
 
        
             
        
        
        
Use trigonometric ratios. 
Use angle(19) 
Adjacent side of angle measure 19 is X 
The hypotenuse is 21. 
Use the cosine
Cos(19)=x/21 
Plug in calculator 
(21)cos(19)=19.85 
Round to the nearest tenth. Which means the 8 rounds up to 9. 
Answer: 19.9