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

Answer 1

T - the time that Dennis spent exercising ( in hours );
4 hours   -    800 calories
1 hour     -    800 : 4 = 200 calories
Answer:  D ) C = 200 t