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. Solve the formula for A. At what age would you have a recommended maximum heart rate in beats per minute of 125? (1 point)
A) 40 years
B) 50 years
C) 25 years
D) 45 years
Is it 25 years?
Its 50
Read the multiple choice answers. 52 is not there, right? Since you got 50.94, The number of whole years is 50. So, your answer is 50.
@Lilly is a liar
The equation is M=176-0.8A, where M=maximum heart rate (in beats/minute) and A=Age. The question is asking you to find the age if the maximum heart rate (in beats/minute), or M, is 125. So, just plug in the value of M, or 125, and solve the equation.
Can you show me the equation??
Do minus 176-.08 then divide it by 125 or??
50 yrs?
Or, as an easier way, subsitute A in the equation with each answer. Then see which equation equals 125 or around 125.
ok thanks ! I got 50.94 is this right? SO 52 years?
M=176-0.8A
125 = 176 - 0.8A