Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
a = 2.1 in, A = 52.7°
A. b = 1.6 in, B = 37.3°, c = 2.6 in
B. b = 3.0 in, B = 37.3°, c = 2.6 in
C. b = 0.5 in, B = 37.3°, c = 2.2 in
D. b = 3.0 in, B = 37.3°, c = 3.7 in
Answer: A
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Evaluate the expression.
A. 1 B. 80,640 C. 0.5 D. 40,320
Compute the average rate of change of f from x1 to x2. Round your answer to two decimal places whenappropriate. Interpret your result graphically.f(x) = -3x + 4, x1= -5 and x2= -2
A. -3; the slope of the line passing through (-5, f(-5)) and (-2, f(-2)) is -3. B. 3; the slope of the line passing through (-5, f(-5)) and (-2, f(-2)) is 3. C. -4; the slope of the line passing through (-5, f(-5)) and (-2, f(-2)) is -4. D. 2; the slope of the line passing through (-5, f(-5)) and (-2, f(-2)) is 2.
Find the unknown value in the percent proportion 
Round to the nearest tenth, if necessary.whole = 2960, percent = 130
A. part = 38,480 B. part = 3848 C. part = 385 D. part = 384,800
Find the focus and directrix of the parabola with the given equation.y2 = 28x
A. Focus: (-7, 0), directrix: x = 7 B. Focus: (7, 0), directrix: x = -7 C. Focus: (0, -7), directrix: y = 7 D. Focus: (0, 7), directrix: y = -7