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
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.
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
C. W equals start fraction 100 C over L end fraction.
To find the age at which the recommended heart rate is 135 beats per minute, we can use the given formula:
M = 176 - 0.8A
Here, M represents the maximum heart rate and A represents the person's age.
We need to find the value of A when M is 135 beats per minute.
135 = 176 - 0.8A
To solve for A, we can rearrange the equation:
0.8A = 176 - 135
0.8A = 41
Next, divide both sides of the equation by 0.8 to isolate A:
A = 41 / 0.8
A ≈ 51.25
Therefore, at an approximate age of 51 years, the recommended heart rate would be around 135 beats per minute.
The correct answer is C. 51 years.