Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.One number exceeds another by -12. The sum of the numbers is 2. What are the numbers?
A. -6 and 8
B. -5 and 7
C. 5 and 8
D. No solution
Answer: B
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Find the indicated quantity for an infinite geometric series.a1 = 5, r = - 
, S = ?
A. 
B. Does not exist
C. - 
D. 
Graph the parabola. Identify the vertex, axis, domain and range.f(x) = -x2 + 2x - 4
A. Vertex: (1, -7); Axis: x = 1;
Domain: (-?, ?); Range: [-5, ?)
B. Vertex: (1, -3); Axis: x = 1;
Domain: (-?, ?); Range: (-?, -3]
C. Vertex: (-1, -5); Axis: x = -1;
Domain: (-?, ?); Range: [-5, ?)
D. Vertex: (1, -7); Axis: x = 1;
Domain: (-?, ?); Range: [-5, ?)
Provide an appropriate response.Which of the following are not allowable operations when the Gaussian elimination method is used to solve a system of linear equations?(i)A multiple of elements of one row may be added to the corresponding elements of any other row.(ii)Any two columns may be interchanged.(iii)The elements of any row may be multiplied by the corresponding elements of another row.(iv)All of the elements of any row may be multiplied by any nonzero number.
A. (ii) B. (ii), (iii) C. (ii), (iii), (iv) D. (i), (iv)
Provide an appropriate response.
Why could (3, -1) not be a solution of the system that is graphed?
What will be an ideal response?