Solve the problem.In one study the maximum heart rates of conditioned athletes were examined. A group of athletes was exercised to exhaustion. Let x represent an athlete's heart rate five seconds after stopping exercise and y represent an athlete's heart rate ten seconds after stopping exercise. It was found that the maximum heart rate H for these athletes satisfied the following two equations. H = 0.491 x + 0.468 y + 11.2 H = -0.981 x + 1.872y + 26.4If an athlete had a maximum heart rate of H = 169, determine the value of y graphically to the tenths place.
A. y = 159.5
B. y = 163.6
C. y = 163.9
D. y = 163.2
Answer: D
You might also like to view...
Solve the problem.The polynomial P(x) = 0.85x - 68 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Find P(900), the profit the vendor makes from selling 900 pretzels.
A. $697 B. $832 C. $765 D. -$59.50
Find the exact value.Given that tan ? = 
with ? in quadrant I, find cos 2?.
A. 
B. - 
C. - 
D. 
Determine whether the set is well defined or not well defined. The set of professional basketball players over the age of 38
A. well defined B. not well defined
Express the set using set-builder notation. Use inequality notation to express the condition x must meet in order to be a member of the set.A = {12, 13, 14, 15, 16,...}
A. {x | x ? N and x ? 12} B. {x | x ? N and x ? 12} C. {x | x ? N and x ? 16} D. {x | x ? N and x > 12}