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 = 1; local maximum at x =-1; concave down on (0, ?); concave up on (-?, 0)
B. Local maximum at x = 1; local minimum at x =-1; concave up on (-?, ?)
C. Local minimum at x = 1; local maximum at x =-1; concave up on (0, ?); concave down on (-?, 0)
D. Local maximum at x = 1; local minimum at x =-1; concave up on (0, ?); concave down on (-?, 0)
Answer: C
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of an acre. How many lots will the land developer have in the 8 acres?
A. 
lot
B. 1
lots
C. 2
lot(s)
D. 28 lots
Classify the triangle as acute, right, or obtuse and as equilateral, isosceles, or scalene.
A. Right, isosceles B. Obtuse, scalene C. Acute, equilateral D. Obtuse, equilateral
Write the decimal number as a fraction in lowest terms.0.15625
A. 6
B. 
C. 
D. 
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A. 6422 B. 642,200 C. 642 D. 64,220