Kira is choosing between two exercise routines

Kira 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 38 calories walking. She then runs at a rate that burns 8.25 calories per minute.

For what amounts of time spent running will Routine #1 burn at most as many calories as Routine #2?

Use t for the number of minutes spent running, and solve your inequality for t .

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