Solve the Problem. -In One Study the Maximum Heart Rates of Conditioned Athletes

Multiple Choice

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 + 26.4
If an athlete had a maximum heart rate of H = 160, determine the value of x graphically to the tenths place.

A) x = 157.3
B) x = 157.0
C) x = 156.2
D) x = 156.7