Find the average of the set of numbers.
, 
, and 
A. 
B. 
C. 1
D. 
Answer: B
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: {x|x > 0} range: all real numbers intercept: (1, 0) symmetry: none B. function domain: all real numbers range: {y|y > 0} intercept: (1, 0) symmetry: none C. function domain: {x|x > 0} range: all real numbers intercept: (0, 1) symmetry: origin D. not a function
Write the system of equations associated with the augmented matrix. Do not solve.
A. 6x + 14y = 17 8x + 7y = 2 B. 6x + 14y = 17 7x + 8y = 2 C. 6x + 14y = -17 8x + 7y = - 2 D. 14x + 6y = 17 8x + 7y = 2
Solve the equation for y.4x + y = 20
A. y = 20 - 4x
B. y = 4x + 20
C. y = 5 - x
D. y = 