Solve the equation. If the equation is an identity or a contradiction, state this.9(x + 5) - 7(x + 5) = 2x + 10
A. {-1}
B. all real numbers; identity
C. {9}
D. ? or { }; contradiction
Answer: B
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Provide an appropriate response.Maximize Z = 4x + y subject to-x + y ?23x + y ?18x, y ?0.
What will be an ideal response?
Use the table to answer the question. Write the number in words. 
Which type of housing is most used?
A. renting a house; five million, one hundred fifty-three thousand, three hundred fifty-four B. owning a house; twenty billion, six hundred fifty-two million, eight hundred fifty-three C. owning a house; twenty million, six hundred fifty-two thousand, eight hundred fifty-three D. owning a condo; seven thousand, three hundred seventy-nine million, two hundred eleven
Graph the circle with radius r and center (h, k).r = 4; (h, k) = (4, 0) 
A. 
B. 
C. 
D. 
Find the production matrix for the input-output and demand matrices.A = 
, D = 
A. 
B. 
C. 
D. 