If an athlete expends 2965 kj/h, how long does she have to play to work off 1.00 lb of body fat? note that the nutritional calorie (calorie) is equivalent to 1 kcal, and one pound of body fat is equivalent to about 4.10 × 103 calories.

hours?

5.78 h

Explanation:

To answer this problem first we convert 2965 kJ/h to kcal, and then we convert that value into nutritional calories per hour ( Calories/h), as follows:

2965 kJ/h * 708.635 Calories/h

Then we divide 4.10 x 10³ Calories by that value, in order to calculate how many hours it would take to burn off that many Calories (which are equal to 1.00 lb of body fat):

4.10 x 10³ Calories ÷ (708.635 Calories/h) = 5.78 h

i think   the answer is c hope i'm right