For the given polar equation, write an equivalent rectangular equation. r2sin 2? = 42
A. y = 21x
B. y = 
C. y = 
D. y = 42x2
Answer: C
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Solve the equation by using the quadratic formula. Give only real number solutions.6n2 = -12n - 3
A. 
B. 
C. 
D. 
Solve the problem.Use Newton's Law of Cooling to find the temperature in the following case. A loaf of bread is removed from an oven at 
and cooled in a room whose temperature is 
. If the bread cools to 
in 20 minutes, how much longer will it take the bread to cool to 
A. ? 26 minutes B. ? 7 minutes C. ? 6 minutes D. ? 18 minutes
Find the area.
A. 728 m2 B. 364 m2 C. 82 m2 D. 41 m2
Determine the discriminant of the quadratic equation. Use the value of the discriminant to determine whether the quadratic equation has two rational solutions, two irrational solutions, one repeated real solution, or two complex solutions that are not real.3x2 = 4x - 6
A. One repeated real solution B. Two irrational solutions C. Two rational solutions D. Two complex solutions that are not real