Evaluate.a2 + 7abc - c2 for a = -5, b = 8, and c = 9
A. -2626
B. -2576
C. 2464
D. -2414
Answer: B
Mathematics
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Find the distance d(A, B) between the points A and B.A(-6, -1); B(4, -5)
A. 84
B. 14
C. 2
D. 84
Mathematics
Find an equation in the form y = Acos x or y = Asin x that represents the given graph.
A. y = -3.5cos x B. y = -3.5sin x C. y = 3.5sin x D. y = 3.5cos x
Mathematics
Solve the problem.The polynomial 0.0033x3 + 0.0058x2 + 0.112x + 1.75 gives the approximate total earnings of a company, in millions of dollars, where x = 0 corresponds to 2008, x = 1 corresponds to 2009, and so on. This model is valid for the years from 2008 to 2012. Determine the earnings for 2009. Round to the nearest hundredth.
A. $1.75 million B. $1.87 million C. $2.02 million D. $1.86 million
Mathematics
Solve the equation.
+ 8 = 
A. 
B. 
C. 
D. 
Mathematics