Expand.
5
A. 243 - y -
y2 -
y3 -
y4 -
y5
B. -243 + y -
y2 +
y3 -
y4 +
y5
C. 243 - y +
y2 -
y3 +
y4 -
y5
D. 243 + y +
y2 +
y3 +
y4 +
y5
Answer: D
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) B. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0) D. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0)
Solve the inequality. Write the solution set using interval notation and graph it.x + 7 < 8
A. (-?, 1)
B. (-?, 1]
C. (1, ?)
D. [1, ?)
Find an equation of the parabola described.Vertex at (0, 0); axis of symmetry the x-axis; containing the point (1, 3)
A. x2 = 9y
B. x2 = y
C. y2 = x
D. y2 = 9x
Find an equation for the ellipse described.Focus at (-2, 0); vertices at (±6, 0)
A. +
= 1
B. +
= 1
C. +
= 1
D. +
= 1