Find the vertices and foci of the ellipse. Graph the ellipse.4x2 + 49y2 = 196
A. Foci at (0, -7) and (0, 7)
Vertices at (0, -49), (0, 49)
B. Foci at (-7, 0) and (7, 0)
Vertices at (-49, 0), (49, 0)
C. Foci at (0, - 3
) and (0, 3
)
Vertices at (0, -7), (0, 7)
D. Foci at (- 3
, 0) and (3
, 0)
Vertices at (-7, 0), (7, 0)
Answer: D
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Sketch a scatter plot of the data shown in the table.The table shows the number y of Wal-Mart stores for each year x from 2000 through 2007. Year, x Number of stores, y 2000 3700 2001 4400 2002 4680 2003 5010 2004 5550 2005 6360 2006 6680 2007 7340
A. ?
x: Year (0 ? 2000)
y: Number of stores
B. ?
x: Year (0 ? 2000)
y: Number of stores
C. ?
?
x: Year (0 ? 2000)
y: Number of stores
D. ?
x: Year (0 ? 2000)
y: Number of stores
E. ?
x: Year (0 ? 2000)
y: Number of stores
Determine whether the function is one-to-one by graphing and using the horizontal line test.f(x) = 4x2 - 1
A. Yes B. No
Solve.The numerical difference between the area and circumference of a circle is 15? inches. Find the radius of the circle.
A. 6 in. B. 3 in. C. 5 in. D. 3 in. or 5 in.
Express the statement as an equation involving the indicated variables.The circumference C of a circle is the product of ? and its diameter d.
A. C = 2?d
B. C = ? + d
C. C = ?d
D. C = 