Simplify the expression by combining like terms.4b - 4a + 4c + 2b - 9a
A. 6a - 13b + 4c
B. -13a + 6b
C. 5a + 6b + 4c
D. -13a + 6b + 4c
Answer: D
Mathematics
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Find the vertices and foci of the ellipse. Graph the ellipse.
+ 
= 1
A. Foci at (0, - 2
) and (0, 2
)
Vertices at (0, -9), (0, 9)
B. Foci at (0, -9) and (0, 9)
Vertices at (0, -81), (0, 81)
C. Foci at (-9, 0) and (9, 0)
Vertices at (-81, 0), (81, 0)
D. Foci at (- 2
, 0) and (2
, 0)
Vertices at (-9, 0), (9, 0)
Mathematics
Determine whether the equation defines y as a function of x. y = x3
A. function B. not a function
Mathematics
Provide an appropriate response.True or false? Force is an example of a scalar quantity.
A. True B. False
Mathematics
Approximate the area under the curve and above the x-axis using n rectangles. Use the midpoints of the rectangles.f(x) = 
from x = -2 to x = 7; n = 4
A. - 
B. 
C. 
D. 
Mathematics