Question

Miguel indurain, a five-time winner of the tour de france, has the lowest recorded resting heart rate, \[28\] beats per minute \[(\text{bpm})\]. this is less than half the normal rate, which is about \[66\text{ bpm}\]. which of the following equations, where \[t\] represents time in minutes and \[b\] the number of beats, represents a heart rate greater than indurain's? choose all answers that apply: choose all answers that apply: (choice a) \[b=2.8t\] a \[b=2.8t\] (choice b) \[b=20t\] b \[b=20t\] (choice c) \[b=27t\] c \[b=27t\] (choice d) \[b=29t\] d \[b=29t\]

Answer 1

The equation representing a heart rate greater than Miguel Indurain's resting heart rate of 28 bpm is Choice D: b=29t, because at t=1 minute, it gives 29 beats, which is higher than 28 bpm.

Step-by-step explanation:

To find which equations represent a heart rate greater than Miguel Indurain's resting heart rate of 28 beats per minute, we can compare the rate of beats per minute given by each equation with Indurain's rate. We evaluate each equation by considering the number of beats, b, in one minute of time, t. For these linear equations, the coefficient of t indicates the number of beats per minute.

• Choice A: b = 2.8t. At t = 1, b would be 2.8 bpm, which is much less than 28 bpm.
• Choice B: b = 20t. At t = 1, b would be 20 bpm, which is also less than 28 bpm.
• Choice C: b = 27t. At t = 1, b would be 27 bpm, just below 28 bpm.
• Choice D: b = 29t. At t = 1, b would be 29 bpm, which is greater than 28 bpm, indicating that choice D represents a heart rate greater than Indurain's.

Therefore, the equation that represents a heart rate greater than Indurain's is Choice D: b = 29t.