The total number of calories burned during exercise varies directly with the duration of exercise and the intensity level . Which of the following equations describes this relationship?
Options
A
B
C
D
Answer & Analysis
Answer
B
Analysis
1. Recall the rule for direct variation:
If a variable varies directly with two other variables and , the relationship is of the form , where is the constant of variation.
2. Apply this rule to the problem:
The total number of calories burned
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