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Susan is choosing between two exercise routines. In Routine #1, she burns 25 calories walking. She then runs at a rate that burns 15.5 calories per minute. In Routine #2, she burns 46 calories walking. She then runs at a rate that burns 10.25 calories per minute. For what amounts of time spent running will Routine #1 burn fewer calories than Routine #2

Respuesta :

Answer:

the amswer is .5 minutes

Answer:

Less than 4 minutes  (x < 4)

Step-by-step explanation:

Set up an inequality with the 2 routines.

Routine 1:  y = 25 + 15.5x

Routine 2: y = 46 + 10.25x

We want to know what values of x (time) will allow Routine #1 < Routine #2

25 + 15.5x < 46 + 10.25x

15.5x < 21 + 10.25x

5.25x < 21

x < 4

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