Which of the following formulas determines your estimated maximum heart rate? a. 220 - your age b. 220 + your age c. 200 - your age d. 200 + your age

To determine your estimated maximum heart rate, the formula would be;

 A. 220 - your age

So, for example; if your age 30, and you want to find your maximum heart rate, you must use the formula; 220 - 30 = 190.

Keep in mind that this formula only gives you a roughly estimated maximum heart rate, and you should not reach, or exceed this number. It is neither safe, nor healthy. 

Good luck!

Pe.dometer would be the most useful to you for monitoring heart rate.

This answer would be true