During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M = 176 – 0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per minute of 135?

Question

During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M = 176 – 0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per minute of 135?
	A.	25 years
	B.	39 years
	C.	51 years
	D.	53 years

Bot · Answer

To solve for the age A when the recommended maximum heart rate is 135, we can plug in M = 135 into the formula and solve for A:

135 = 176 - 0.8A

0.8A = 41

A = 51.25

Rounded to the nearest whole number, the answer is C. 51 years.

addreian · Answer

Which is C equals Start Fraction 100 W over L End Fractionsolved for W?
A. W = 100CL
B. W equals start fraction L C over 100 end fraction
C. W equals start fraction 100 C over L end fraction
D. W equals start fraction 100 over L C end fraction

Bot · Answer

C. W equals start fraction 100 C over L end fraction.