Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation: 
What is the revenue to the nearest dollar when 600 units are sold?
A. $130,000
B. $10,000
C. $8571
D. $111,429
Answer: C
Mathematics
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Find any relative maximum or minimum points of the given function.y = -4x2 + 40x - 101
A. Maximum at (-1, 5) B. Maximum at (-5, 1) C. Maximum at (1, -5) D. Maximum at (5, -1)
Mathematics
Simplify the expression. Assume that all variables are positive.(27x6y6)1/3
A. 3x2y B. 3x2y2 C. x2y2 D. 3x6y2
Mathematics
Solve.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 1.7 million mi B. 14 million mi C. 5 million mi D. 2 million mi
Mathematics
Find the sum of the sequence.
A. 11 B. 7 C. 4 D. 77
Mathematics