Solve the problem.Your company uses the quadratic model y = -11x2 + 350x to represent how many units (y) of a new product will be sold (x) weeks after its release. How many units can you expect to sell in week 12?
A. 2616 units
B. 5784 units
C. 4332 units
D. 4068 units
Answer: A
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Find the angle between the planes.3x - 8y - 8z = 9and- 4x + 2y - 9z = 4
A. 0.955 B. 0.383 C. 1.460 D. 1.187
Solve the problem.If a submarine goes 3k3 + 15k2 + 3k - 30 miles in 3k + 6 hours, what is its rate of speed?
A. k2 + 10.5k - 5 miles/hr B. k2 + 3k - 5 miles/hr C. k2 - 3k + 5 miles/hr D. k3 + 3k2 - 5k miles/hr
Add. Do not use a number line except as a check.-9.2 + 5.4
A. -14.6 B. -3.8 C. 14.6 D. 3.8
Provide an appropriate response.The table shows the number of pupils per teacher in selected counties in a certain state. 
Which counties have a figure that is at most 14.7?
A. Dixson, Hendricks, Putnum B. Addison, Cumberland, Kendall C. Addison, Branson, Cumberland, Kendall D. Branson, Dixson, Hendricks, Putnum