Find the product.(2x + 5)(5x - 10)
A. 7x2 + 5x + 5
B. 10x2 + 5x + 5
C. 10x2 + 5x - 50
D. 7x2 + 5x - 50
Answer: C
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Use the decibel scale to answer the question.How does the intensity of sound from a concert speaker at a distance of 20 meters compare to the intensity at a distance of 100 meters?
A. Factor of 100 weaker at 100 m. B. Factor of 50 weaker at 100 m. C. Factor of 25 weaker at 100 m. D. Factor of 5 weaker at 100 m.
Graph the function using transformations.f(x) = 
- 2
A. 
B. 
C. 
D. 
Find the maximum value of the function and the values of x and y at which the maximum occurs.G = 7x - 2y, subject to x ? 0 0 ? y ? 7 x - y ? 4 x + 2y ? 16
A. Maximum: -14; at (0, 7) B. Maximum: 48; at (8, 4) C. Maximum: 28; at (4, 0) D. Maximum: 0; at (2, 7)
Use the graph to solve the problem.The graph of f(x) = x2 - 11x + 24 is shown below. Use the graph to solve x2 - 11x + 24 = 0.
A. -3, 8 B. -8, 3 C. 3, 8 D. -3, -8