The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 
A. y2 = 10x - 25
B. x2 = 25 - 10y
C. y2 = 25 - 10x
D. x2 = 10y - 25
Answer: C
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Solve the polynomial equation by factoring.x3 + 3x2 - x - 3 = 0
A. 1, -1, 3 B. 1, -2, 5 C. 1, -1, -3 D. 1, -1, -4
Simplify the given expression. Write the answer with variables in alphabetical order and any constant term last.
y3 + 2y - 13y2 + 2
A. cannot be simplified
B. 22y2 - 2y + 2
C. 
y3 + 2y + 2
D. 
y2 + 2y + 2
Find all solutions if 
. Use exact values only.
?
?
A. 
, 
, 
, 
, 
, 
B. 
, 
, 
, 
, 
, 
C. 0, 
, 
, 
, 
, 
D. 
, 
, 
, 
, 
, 
E. 
, 
, 
Use Bayes' rule to find the indicated probability.Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20% and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8% of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annual total production of Quality Motors is 1,000,000 cars. A car chosen at random from the annual output and is found defection. What is the probability that it came from plant 2?
A. 0.35 B. 0.559 C. 0.224 D. 0.217