8.5t >= 17+4.25t
4.25t >= 17
t >= 4
Josh is choosing between two exercise routines.
In Routine #1, he does only running, burning 8.5 calories per minute.
In Routine #2, he burns 17 calories walking. He then runs at a rate that burns 4.25 calories per minute.
For what amounts of time spent running will Routine #1 burn at least as many calories as Routine #2?
Use t for the number of minutes spent running, and solve your inequality for t.
1 answer
4 answers