Match the graph to one of the polar equations.
A. r sin ? = -1
B. r = -2 cos ?
C. r = -2 sin ?
D. r = -1
Answer: B
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Use the product rule to multiply.
? 
A. 5
B. 
C. 
D. 
Find the partial fraction decomposition for the rational expression.
A. 2x - 5 + 
+ 
B. 2x - 9 + 
+ 
C. 2x - 9 + 
+ 
D. 2x - 5 + 
+ 
A toy making company has at least 300 squares of felt, 700 oz of stuffing, and 230 ft of trim to make dogs and dinosaurs. A dog uses 1 square of felt, 4 oz of stuffing, and 1 ft of trim. A dinosaur uses 2 squares of felt, 3 oz of stuffing, and 1 ft of trim.It costs the company $1.01 to make each dog and $1.33 for each dinosaur. The company wants to minimize its costs. What are the coefficients of the dual objective function?
A. 1, 4, 1 B. 300, 700, 230 C. 1, 2, 1.01 D. 1.01, 1.33
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.1, 5, 9, 13, 17, . . .
A. an = 4n - 3; a20 = 77 B. an = 3n - 4; a20 = 56 C. an = n + 4; a20 = 24 D. an = 4n + 3; a20 = 83