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The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R= 176- 0.8x. What is the age, in years, of a person whose maximum recommended pulse rate when exercising is 140 ?
(A) 40 (B) 45 (C) 50 (D) 55 (E) 60
Problem Solving Question: 1 Category:Algebra Substitution; Operations with rational numbers Page: 62 Difficulty: 500
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Re: The maximum recommended pulse rate R, when exercising, for a
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23 Dec 2013, 07:04
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SOLUTION:
The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R= 176 - 0.8x. What is the age, in years, of a person whose maximum recommended pulse rate when exercising is 140 ? (A) 40 (B) 45 (C) 50 (D) 55 (E) 60
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12 Feb 2017, 04:44
The question is a straightforward Formulas problem. We are initially given the formula i.e. the equation for Maximum Pulse Rate (R) in terms of age x. Further, we are supposed to find out the age for someone whose maximum pulse rate is 140. So now, for the equation R=176 - 0.8x, we substitute R=140 and solve for x. Hence, 140=176-0.8x Therefore, 0.8x=36 Therefore, x=45.
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10 Jun 2017, 08:15
Bunuel wrote:
The maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R= 176- 0.8x. What is the age, in years, of a person whose maximum recommended pulse rate when exercising is 140 ?
(A) 40 (B) 45 (C) 50 (D) 55 (E) 60
We are given that the maximum recommended pulse rate R, when exercising, for a person who is x years of age is given by the equation R = 176 - 0.8x.
We need to determine the age of a person whose maximum recommended pulse rate when exercising is 140.
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10 Aug 2018, 07:58
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