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) = 2x2 + x + 3 from x = -2 to x = 1; n = 3
A. 13
B. 17
C. 25
D. 21
Answer: A
Mathematics
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Find the volume of the indicated region.the region that lies under the plane 
and over the triangle with vertices at 
, 
, and 
A. 6 B. 12 C. 10 D. 8
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Solve.A plumber has 28 pieces of 12-foot PVC pipe. What is the total length of PVC that he has?
Fill in the blank(s) with the appropriate word(s).
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Consider the system 
(a) Rewrite it in the form AX = B, where A, B, and X are appropriate matrices.(b) Find the inverse of A.(c) Solve the system by computing A-1B.
What will be an ideal response?
Mathematics
Express as an equivalent expression without exponents.
6
A. 
B. 64
C. -64
D. - 
Mathematics