Find the derivative of the function.g(x) = 
A. g '(x) = 
B. g '(x) = 
C. g '(x) = 
D. g '(x) = 
Answer: A
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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
Solve the problem.The length of a British nautical mile varies with latitude, according to the formula 
where ? is the latitude in radians and l is in feet. Find the average length of a nautical mile for latitudes between ?/4 radians and ?/2 radians.
A. 18,265 ft B. 9534 ft C. 6065 ft D. 4767 ft
Evaluate the expression.(-7)3
A. 343 B. 21 C. -21 D. -343
Decide whether the given number is a solution of the given equation.Is -18 a solution of 7c + 3 - 6c = -29 + 14 ?
A. Yes B. No