Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x2
A. Yes, yes
B. No, yes
C. No, no
D. Yes, no
Answer: A
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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 = 1; local maximum at x = -1; concave up on (-?, ?) B. Local minimum at x = 1; local maximum at x = -1; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 1; local maximum at x = -1; concave up on (0, ?); concave down on (-?, 0) D. Local minimum at x = 1; local maximum at x = -1; concave down on (-?, ?)
Simplify the expression.(-3p)8 (-3p)4
A. 9p12 B. 312p12 C. -312p12 D. 312p
Simplify the radical.
A. 18
B. 10
C. 6
D. 60
Decide on the payoff in this game when the specified strategy is used.(3, 2)
A. $1 from A to B B. $4 from B to A C. $2 from A to B D. $10 from B to A