Find a formula for an for the arithmetic sequence.
?
?
A. an ?= 4 - 2n
B. an ?= -6 + 4n?
C. an ?= - 2 + 4n?
D. an ?= 6 - 2n?
E. an ?= 4n
Answer: D
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (-2x - 10y)5
A. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
Provide an appropriate response.If n is odd, under what condition is 
negative?
A. When a is positive B. Never C. When a is zero D. When a is negative
Solve the system.2w + x - 2y + z = -1-w + 2x + y - 2z = -52w - x + 2y + 2z = 8 w + x - 2y - z = 1
A. (-4, -1, 2, 3) B. (4, -4, 1, -3) C. (-4, 3, 2, 1) D. (4, -8, 0, 3)
Predict the general, or nth term, an, of the sequence.
, 
, 
, 
, 
, . . .
A. 
B. 
C. 
D. 