Your heart rate rises when you exercise.
during aerobic exercise, your heart rate
should be at least 0.7(220 - a), but no
more than 0.85(220 - a), where a is your
age. find the target range if you are 14
years old.

ANSWER:  

While doing the aerobic exercise, heart rate must be in the range of 144.2 bpm to 175.1 bpm for a 14 years old person.

SOLUTION:

Given, your heart rate rises when you exercise.  

During aerobic exercise, your heart rate should be at least 0.7(220 - a), but no more than 0.85(220 - a), where “a” is your age.  

We need to find the target range if you are 14 years old.

Here a = 14

For 14 years old, lower range is

0.7(220 – 14)

0.7(206)

144.2

Now, for 14 years old, upper range is

0.85(220 – 14)

0.85(206)

175.1

Hence, while doing the aerobic exercise, heart rate must be in the range of 144.2 bpm to 175.1 bpm for a 14 years old person.

javeir earned 56 dollors more than kyle so kyle and javier had 14w but javier made 56 dollors more so 14w plus 56 equals 70w so kyle has 14w

step-by-step explanation: hope i plz give me brainliest with the points so this is not constant cause it says last week so its clearly not every week

table 3 represents a direct variation function. : )