Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 2x + 3 from x = 0 to x = 2; n = 4
A. 11
B. 15
C. 13
D. 17
Answer: A
Mathematics
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Graph the parabola and show the focus and directrix.x = 3y2
A. 
B. 
C. 
D. 
Mathematics
Find the limit.
sin
A. 
B. 1
C. 0
D. No limit
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For an election with four candidates (A, B, C, and D) we have the following preference schedule:
Using the method of pairwise comparisons, which candidate wins the election?
A. A B. B C. C D. D E. none of these
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = 2x2 - 19x + 42
A. (7, 0), (3, 0), (0,42)
B. (7, 0), (3, 0), (0,-42)
C. (6, 0), (- 
, 0), (0,-42)
D. (6, 0), (
, 0), (0,42)
Mathematics