Solve the problem.Voltage through a circuit is described by the equation 
Find the amplitude and phase shift of the voltage.
A. A = 150, ? = 349.5818
B. A = 150, ? = 0.6435
C. A = 150, ? = 242.594
D. A = 15, ? = 0.6435
Answer: B
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Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
To compete more fully and offer better value to their customers, Dow and Monsanto are working together to develop and produce new corn seed. Each partner will contribute four genetic traits for each new seed that will overcome some problems with pests and ward off weeds. This is an example of a ____ alliance
A. horizontal B. vertical C. network D. symbiotic
Solve the inequality and express the solution set in interval notation. Graph the solution set on the real number line.
< 2
A. x > -3; (-3, ?)
B. x ? -3; (-?, -3]
C. x < -3; (-?, -3)
D. x ? -3; [-3, ?)
Multiply the expressions.(7x + 2y)(7x - 2y)
A. 49x2 + 28xy - 4y2 B. 49x2 - 4y2 C. 7x2 - 2y2 D. 49x2 - 28xy - 4y2