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Mathematics
OpenStudy (anonymous):

Jackson is on a new exercise regimen. To begin, his trainer does not want him to complete more than a total of 27 lunges and sit-ups. For every lunge that he completes, Jacob burns 30 calories. He burns an additional 20 calories for every sit-up. His goal is to burn at least 620 calories during a workout session. Which is a combination of lunges and sit-ups that Jacob can complete in a session? 7 lunges and 19 sit-ups 11 lunges and 15 sit-ups 10 lunges and 14 sit-ups 12 lunges and 19 sit-ups

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