Sketch the graph of the quadratic function.f(x) = -2x2 - 8x - 13
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Choose a reasonable method for solving the equation. Round your answers to three decimal places.
A) x=1.464, x= -1.464
B) x=1.464, x= -1.809
C) x=1.487, x= -1.464
D) x=1.809, x= -1.809
E) no real-number solution
Mathematics
Factor completely. State that the polynomial is prime if it cannot be factored.18a4 - 50b2
A. 2(3a2 + 5b)2 B. 2(3a2 - 5b)2 C. 2(3a2 + 5b)(3a2 - 5b) D. prime
Mathematics
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
, where x is the number of watches repaired. What is his minimum cost?
A. $318 B. $254 C. $127 D. $159
Mathematics
Solve the equation by completing the square.11x2 + 6x = 0
A. 
, 0
B. 
, - 
C. 0
D. - 
, 0
Mathematics