Posted by justin on Monday, October 17, 2011 at 12:20am.
Dale is choosing between two exercise routines. In Routine #1, he does only running, burning 10 calories per minute. In Routine #2, he burns 10 calories walking. He then runs at a rate that burns 8 calories per minute. For what amounts of time spent running will Routine #1 burn more calories than Routine #2? Use for the number of minutes spent running, and solve your inequality for .

algebra  Kellie B., Monday, October 17, 2011 at 6:20am
This cannot be determined without a given time interval for the time it takes him to burn 10 calories while walking.