The maximum heart rate, in beats per minute, that you should achieve during exer
ID: 3028830 • Letter: T
Question
The maximum heart rate, in beats per minute, that you should achieve during exercise is 220 minus your age, 220- a220a. Your exercise goal is to improve cardiovascular conditioning. Use the following formulas to answer parts a and b. Lower limit of range Hequals=seven tenths left parenthesis 220 minus a right parenthesis710(220a) Upper limit of range Hequals=four fifths45(220 minus a220a) a. What is the lower limit of the heart range, in beats per minute, for a 39-year-old with this exercise goal? The lower limit of the heart range is ____ beats per minute. (Round to the nearest integer as needed.) b. What is the upper limit of the heart range, in beats per minute, for a 39-year-old with this exercise goal? Thus, the upper limit of the heart range is ____ beats per minute. (Round to the nearest integer as needed.)
Explanation / Answer
a. The lower limit of the heart range, in beats per minute, for a 39-year-old with the given exercise goal is 7/10( 220 -39) = 7/10(181) = 1267/10 = 126.7 = 128 heart beats per minute ( on rounding off to the nearest integer).
b. The upper limit of the heart range, in beats per minute, for a 39-year-old with the given exercise goal is 4/5( 220 -39) = 4/5( 181) = 724/5 = 144.8 = 145 heart beats per minute ( on rounding off to the nearest integer).
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