Find the vertices and foci of the ellipse.
+ 
= 1
A. Vertices: (0, ±5); Foci: (0, ±3)
B. Vertices: (0, ±5); Foci: (0, ±4)
C. Vertices: (±5, 0); Foci: (±3, 0)
D. Vertices: (±5, 0); Foci: (±4, 0)
Answer: D
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A. r = 8% B. r = 10% C. r = 7% D. r = 9%
Find the indicated term of the sequence.an = 
; a5
A. 
B. 
C. 
D. 
Solve the problem.Two kinds of crated cargo, A and B, are to be shipped by truck. The weight and volume of each type are given in the following table: 
The shipping company charges $75 per crate for cargo A and $100 per crate for cargo B. The truck has a maximum load limit of 7,200 pounds and 1,000 cubic feet. How many of each type of cargo should be shipped to maximize profit for the shipping company?
A. 10 crates of cargo A, 18 crates of cargo B B. 20 crates of cargo A, 0 crates of cargo B C. 0 crates of cargo A, 20 crates of cargo B D. 18 crates of cargo A, 10 crates of cargo B
The point P on the unit circle that corresponds to a real number t is given. Find the indicated trigonometric function.
?Find sec t.
A. 
B. 
C. 
D. 