Find an equation for the graph.
A. y = 3 cos 
x
B. y = 2 cos 
x
C. y = 2 cos 3?x
D. y = 3 cos 2?x
Answer: B
Mathematics
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Graph each system of inequalities and shade the portion of the graph represented by the solution set..
A. 
B. 
C. 
D. 
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Solve the problem.If 5000 feet of fencing are used to enclose a rectangular field, the resulting area of the field is 
where x is the width of the pen. What is the maximum possible area of the pen?
A. 62,500 ft2 B. 31,250 ft2 C. 1,562,500 ft2 D. 1250 ft2
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Decide what number must be added to the binomial to make a perfect square trinomial.x2 - 
x
A. 
B. - 
C. - 
D. 
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Find the given value.Find (f ? g)(-4) when f(x) = x + 5 and g(x) = 3x2 + 14x + 1.
A. -441 B. -39 C. -7 D. 63
Mathematics