Write a system of equations associated with the augmented matrix. Do not try to solve.
A. x = 5
y = 5
z = 0
B. x = 2
y = 2
z = 7
C. x = -2
y = -2
z = -7
D. x = 0
y = -4
z = -9
Answer: C
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 9 ln 126
B. ln 126
C. 9 ln 626
D. ln 626
Divide if possible.
A. 15 B. 0 C. 1 D. Undefined
Multiply the pair of monomials.(-4x3y4)(8x4y)
A. 4x12y4 B. -32x7y5 C. -32x7y4 D. 4x7y5
Solve the problem.Kayla, a photographer, can produce prints of her photos at a cost of $3 per print, with a setup cost of $30 per run. She sells the prints for $8 each. Write an equation for the total cost. Let C represent the total cost and x represent the number of photos produced. Graph the equation by hand. Use the graph to determine the cost of producing 10 prints.
A. C = 8x; $72
B. C = 3x + 30; $63
C. C = 8x; $80
D. C = 3x + 30; $60