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ACCUPLACER Math Skills

#2 - Substituting Values into Algebraic Expressions

Sample Question:

2. Doctors use the term maximum heart rate (MHR) when referring to the quantity found by starting with 220 beats per minute and subtracting 1 beat per minute for each year of a person’s age. Doctors recommend exercising 3 or 4 times each week for at least 20 minutes with your heart rate increased from its resting heart rate (RHR) to its training heart rate (THR), where

\( THR = RHR + .65(MHR - RHR) \)

Which of the following is closest to the THR of a 43-year-old person whose RHR is 54 beats per minute?

A. \( 197 \)

B. \( 169 \)

C. \( 162 \)

D. \( 134 \)

E. \( 80 \)

Answer: D


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