Multiply.(2x - 2)(x - 9)
A. x2 - 20x - 21
B. 2x2 - 20x + 18
C. x2 + 18x - 20
D. 2x2 - 21x + 18
Answer: B
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Solve the problem.A rotating beacon is located 15 ft from a wall. The distance from the beacon to the point on the wall where the beacon is aimed is given by a = 15
,where t is time measured in seconds since the beacon started rotating. Find a for 
Round your answer to the nearest hundredth.
A. 60.32 ft B. -17.12 ft C. 17.12 ft D. 38.72 ft
Convert the rectangular equation to a polar equation that expresses r in terms of ?.x = 4
A. r = 
B. r = 4
C. r = 
D. cos ? = 4
Simplify. Write your answer in the form a + bi, where a and b are real numbers.(-5 - 5i) - (6 - i)
A. -11 - 5i B. 11 + 4i C. -11 - 4i D. -11 + 4i
Convert the given unit of measure to its base unit - meters, grams, or liters.6100 mL
A. 0.61 L B. 61 L C. 610 L D. 6.1 L