Answer: Sonya's heart rate increased by 75% after running a mile on the treadmill.
Explanation:
To find the percent increase in Sonya's heart rate, we can use the following formula:
Percent increase = (New value - Old value) / Old value * 100
Substituting the given values into the formula, we get:
Percent increase = (133 beats per minute - 76 beats per minute) / 76 beats per minute * 100
Calculating the result, we get:
Percent increase = 57 beats per minute / 76 beats per minute * 100
= 0.75 * 100
= 75%
Therefore, Sonya's heart rate increased by 75% after running a mile on the treadmill.