C. 220 - 13
The formula for calculating maximum heart rate is 220 - age. So for a 13-year-old, their maximum heart rate would be 220 - 13 = 207.
If you are 13 years old, which math problem would give you your maximum heart rate?
A. 200 - 13
B. 207
C. 220 - 13
D. 193
E. 220 + 13
F. 100
G. 145
H. 176
I. 200 + 13
1 answer