The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 
, y = 5
A. r = 
B. r = 
C. r = 
D. r = 
Answer: A
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 3, x = 0
A. 18?
B. 
?
C. 
?
D. 9?
Solve the problem.A computer manufacturer has three outlet stores that sell its four computer systems. The following table shows the numbers of systems sold by the three stores in July.
The prices of the systems are: $1200 for System 1, $1500 for System 2, $1600 for System 3, and $1800 for System 4. Write the information from the table as a 4 x 3 matrix B. Write a row matrix A for which the entries represent the prices for the systems. If 
find c13 . What does this entry of C represent?
A. c13 = 164,000. c13 represents the total sales at Store 3 in July. B. c13 = 144,000. c13 represents the sales of System 3 at all stores in July. C. c13 = 124,000. c13 represents the total sales at Store 3 in July. D. c13 = 154,000. c13 represents the total sales at Store 1 in July.
Referring to triangle ABC, find the area of the triangle. ? a = 76.6 m, c = 42.7 m, B = 16.1° ? Round to three significant digits. ? S = __________ m2
Fill in the blank(s) with the appropriate word(s).
Multiply the polynomials and simplify by combining like terms.(5y2 - y + 3)(-4y3 - 6y + 3)
A. -20y5 + 6y2 + 9 B. -20y5 + 4y4 - 42y3 + 21y2 - 21y + 9 C. -20y5 - 4y4 - 42y3 + 21y2 - 21y - 9 D. 20y6 + 4y4 + 42y3 + 21y2 - 21y + 9