Let A and B be sets with cardinal numbers, n(A) = a and n(B) = b, respectively. Decide whether the statement is true or false.n(A ? B) = n(A) - n(B)
A. True
B. False
Answer: B
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Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-4x - 4y + 3z = -21-16x - 15y + 13z = 0-8x - 7y + 7z = -12
A. 
B. 
C. 
D. No solution
Provide an appropriate response.Change to simplest radical form: (2xy6z35)3/7
What will be an ideal response?
Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = x2(x - 2)(x - 6)
A. 0, crosses the x-axis; 2, crosses the x-axis; 6, crosses the x-axis B. 0, crosses the x-axis; 2, touches the x-axis and turns around; 6, touches the x-axis and turns around C. 0, touches the x-axis and turns around; 2, crosses the x-axis; 6, crosses the x-axis D. 0, touches the x-axis and turns around; -2, crosses the x-axis; -6, crosses the x-axis
Use mathematical induction to prove the statement is true for all positive integers n.12 + 42 + 72 + . . . + (3n - 2)2 = 
What will be an ideal response?