Multiply.(2x - 12)(2x + 12)
A. 4x2 + 48x - 144
B. 2x2 + 48x - 144
C. 4x2 - 48x - 144
D. 4x2 - 144
Answer: D
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Solve the problem.
The graph of y = f(x) gives the speed limit y along a rural highway after traveling x miles. (i) Evaluate f(16), f(44), and f(48). (ii) At what x-values is the graph discontinuous?
A. 60, 60, 75; f(8), f(16), f(24), f(48), and f(56) B. 67.5, 75, 90; f(8), f(16), f(24), f(40), and f(48) C. 60, 75, 75; f(4), f(16), f(32), f(40), and f(48) D. 75, 67.5, 75; f(16), f(24), f(40), f(48), and f(56)
Find matrices A, X, and B such that the linear system is equivalent to the matrix equation AX = B.
A. A = 
, X = 
, B = 
B. A = 
, X = 
, B = 
C. A =
, X = 
, B = 
D. A = 
, X = 
, B = 
Decompose into partial fractions.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Divide.
A. 362 B. 377 R 6 C. 382 R 14 D. 372