9. Kristy, a 13-year-old girl, has a resting heart rate of 67 beats per minute. Using the lower and upper limit reserve training percentages of 50 percent and 85 percent respectively, what is Kristy’s target heart rate range?

137 to 186 per minute
140 to 194 per minute
147 to 200 per minute
153 to 207 per minute

To find Kristy's target heart rate range, we can use the lower and upper limit reserve training percentages.

1. Calculate the reserve range:
Upper Limit - Lower Limit = Reserve Range
85% - 50% = 35%

2. Calculate the actual range:
Reserve Range of 35% of the resting heart rate (67 BPM) = 0.35 * 67 BPM

3. Calculate the lower limit of the target heart rate range by adding the actual range to the resting heart rate:
Lower Limit = Resting Heart Rate + Actual Range

Calculating the lower limit:
Lower Limit = 67 BPM + (0.35 * 67 BPM)

4. Calculate the upper limit of the target heart rate range by adding the actual range to the resting heart rate:
Upper Limit = Resting Heart Rate + Actual Range

Calculating the upper limit:
Upper Limit = 67 BPM + (0.35 * 67 BPM)

Now let's calculate the values:

Lower Limit: 67 BPM + (0.35 * 67 BPM) = 67 BPM + 23.45 BPM = 90.45 BPM (approximately)

Upper Limit: 67 BPM + (0.35 * 67 BPM) = 67 BPM + 23.45 BPM = 90.45 BPM (approximately)

Therefore, Kristy's target heart rate range is approximately 90.45 BPM to 90.45 BPM.

However, none of the provided options match this outcome. It's possible that there might be an error in the given options, or the correct target heart rate range was not provided.