Jenny is choosing between two exercise routines. In Routine #1, she burns 20 calories walking. She then runs at a rate that burns 10.5 calories per minute.
In Routine #2, she burns 46 calories walking. She then runs at a rate that burns 7.9 calories per minute.
For what amounts of time spent running will Routine #1 burn fewer calories than Routine #2?
Use t for the number of minutes spent running, and solve your inequality for.