Solve the problem.Find the centroid of the region in the first quadrant bounded by the curve y = 9 cos x and the axes.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: D
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Solve the system by either elimination or substitution. Verify your work by using "intersect" on your graphing calculator of by checking that your result satisfies both equations of the system. x = -8y + 432x + 7y = 32
A. empty set solution; inconsistent system B. (-5, 6) C. (-6, 7) D. (5, 7)
Provide an appropriate response.Without solving, determine whether the following system of linear equations has a unique solution, or infinitely many solutions.
What will be an ideal response?
Use the graph to determine the domain and range of the function. 
A. domain: {x|x > 0} range: {y|y ? -2} B. domain: {x|x ? -2} range: {y|y > 0} C. domain: {x|x ? -2} range: {y|y ? 0} D. domain: {x|x ? 0} range: {y|y ? -2}
Find the area of the triangle.The base is 11.8 cm and the height is 11.3 cm.
A. 133.34 cm2 B. 66.67 cm2 C. 266.68 cm2 D. 11.55 cm2