Factor by grouping.3x3 + 9x2 - 2x - 6
A. (3x2 + 2)(x - 3)
B. (3x2 - 2)(x - 3)
C. (3x2 + 2)(x + 3)
D. (3x2 - 2)(x + 3)
Answer: D
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Solve the problem.Suppose that a radio transmission pattern can be modeled by 
for 
where the units are miles. Determine how far the signal reaches to the east, assuming that east is represented by the direction of the positive 
A. 120 miles B. 28,800 miles C. 14,400 miles D. 240 miles
Determine whether the equation is linear. If it is linear, give values for a and b so that the equation can be written in the form ax + b = 0.4x - 13 = 0
A. Yes; a = -13, b = 4 B. Yes; a = 4, b = -13 C. Yes; a = 4, b = 13 D. No
Solve the problem.The school library has an inventory of 33,058 books. If 5128 have been checked out, how many are still on the shelves?
A. 27,830 books B. 38,186 books C. 27,930 books D. 22,802 books
Find the reference angle for the given angle. -202°
(a) 22° (b) 58° (c) 158° (d) 52° (e) 82°