Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
?
?
A. ??(10, 1)
B. ?(2, 1)
C. ??(2, -6)
D. ?(-2, 1)
E. ??(2, -1)
Answer: B
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
B. 
C. 
D. 
Provide an appropriate response.Find the standard deviation of the following: 65, 45, 36, 21, 70, 93 Round answer to tenths.
Fill in the blank(s) with the appropriate word(s).
Use substitution to determine whether the given ordered pair is a solution of the given equation.
; 3x + 3y = 7
A. Yes B. No
The graph that follows is the graph of a polynomial function. (i) What is the minimum degree of a polynomial function that could have the graph? (ii) Is the leading coefficient of the polynomial negative or positive? 
A. (i) 2 (ii) Positive B. (i) 3 (ii) Positive C. (i) 2 (ii) Negative D. (i) 3 (ii) Negative