Multiply.(4 - 3x5)2
A. 9x10 + 16
B. 9x25 - 24x5 + 16
C. 9x10 - 12x5 + 16
D. 9x10 - 24x5 + 16
Answer: D
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Determine whether or not the lines through the two pairs of points are parallel or perpendicular.(-7, -3) and (8, 3); (-8, 11) and (-2, -4)
A. Parallel B. Perpendicular
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 = 158, determine the value of y graphically to the tenths place.
A. y = 152.1 B. y = 151.4 C. y = 151.8 D. y = 147.7
Solve the inequality by the test-point method. Write the solution in interval notation.x3 - 4x2 > 0
A. (4, ?) B. (0, 4) C. (-?, 4) D. (-?, 0) ? (4, ?)
Use a graphing utility to graph the polar equation.r = 
A. 
B. 
C. 
D. 