Match the differential equation with the appropriate direction field.y'(x) = y + 2
A. 
B. 
C. 
D. 
Answer: D
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Decide whether the pair of lines is parallel, perpendicular, or neither.The line through (8, 7) and (-7, 15) and the line through 
and 
A. Parallel B. Neither C. Perpendicular
Model the curve with a cosine function.
?
?
Note that the period of the curve is 
, its range is 
and the graph of the cosine function is shifted upward 55 units and shifted to the right 14 units. Write the model function as a function of x and ?.
What will be an ideal response?
Solve, finding all solutions.cos x = - 
(Express your answer in radians.)
A. 
+ 2k? and - 
+ 2k?, where k is any integer
B. 
+ 2k? and 
+ 2k?, where k is any integer
C. 
+ 2k? and 
+ 2k?, where k is any integer
D. 
+ 2k? and 
+ 2k?, where k is any integer
?Find the eigenvalues and corresponding eigenvectors for the matrix if the characteristic equation of the matrix is 
if the characteristic equation of the matrix is 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?
