Study the examples. The arrows indicate the direction that the given cube has been rotated 90°. Pick the cube illustrating the appropriate rotations.
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Rotating a cube.
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Rotation: downward, downward
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A. D
B. B
C. C
D. A
Answer: B
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Translate the problem to a system of equations, then solve using matrices.A grain dealer sold to one customer 5 bushels of wheat, 2 of corn, and 3 of rye, for $18.50; to another, 2 of wheat, 3 of corn, and 5 of rye, for $22.50; and to a third, 3 of wheat, 5 of corn, and 2 of rye, for $19.50. What was the price per bushel for corn?
A. $2.06 B. $1.50 C. $2.00 D. $2.50
Provide an appropriate response.Simplify: 
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Determine which of the following is used to solve the equation 
= c, for c > 0.
A. ax + b = -c B. ax + b = c or ax + b = -c C. ax + b = c and ax + b = -c D. ax + b = c
Write the system of equations associated with the augmented matrix. Do not solve.
A. 
B. 
C. 