The number of calories burned, C, varies directly with the time spent exercising, t. When Dennis walks for 4 hours, he burns 800 calories. Which of the following equations shows this direct linear variation?

A.

C = t

B.

C = 800t

C.

C = 4t

D.

C = 200t

Question

The number of calories burned, C, varies directly with the time spent exercising, t. When Dennis walks for 4 hours, he burns 800 calories. Which of the following equations shows this direct linear variation?
  
 
 

 

 
  

  A. 
 
C = t
   
   

 

 
  

  B. 
 
C = 800t
   
   

 

 
  

  C. 
 
C = 4t
   
   

 

 
  

  D. 
 
C = 200t

anonymous · Answer

$800$ calories in $4$ hours is $\frac{800}{4}$ calories per hour
i.e. $200$ calories per hour