Find the product.
A. 6b3 + 40b2 + 42b + 12
B. 35b2 + 12
C. -b2 + 36b + 12
D. -6b3 + 40b2 - 42b + 12
Answer: D
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Add or subtract as indicated. Simplify, if necessary.- 
- 
A. 
B. - 
C. - 
D. - 
Find the foci and endpoints of each axis for the given ellipse.9x2 + 16y2 = 144
A. Foci: (±
, 0); vertices: (± 4, 0);
endpoints of the minor axis: (0, ± 3)
B. Foci: (± 7, 0); vertices: (± 16, 0);
endpoints of the minor axis: (0, ± 9)
C. Foci: (± 4, 0); vertices: (±
, 0);
endpoints of the minor axis: (± 3, 0)
D. Foci: (0, ±
); vertices: (0 , ± 4);
endpoints of the minor axis: (± 3, 0)
Solve the problem.Suppose that the population of a town is given by 
,where t is the time in years after 1980 and P is the population of the town in thousands. Find P'(t).
A. P'(t) = 
B. P'(t) = 
C. P'(t) = 
D. P'(t) = 
Write any percent as a decimal and any decimal as a percent.At a certain company 17.9% of the employees have engineering degrees.
A. 179 B. 1.79 C. 0.179 D. 0.0179