Solve the system of four equations in four unknowns using matrices. w + 3x + y - 2z = -10-3w - x + 3y + z = 5 2w + 3x - y + 3z = 7 -w + x + y - 3z = -7
A. (1, -6, 0, 4)
B. (-4, 1, -3, 3)
C. (-1, -3, 6, 4)
D. (-3, 0, 4, 1)
Answer: B
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Provide an appropriate response.Identify the numerical coefficient of the following: 
Fill in the blank(s) with the appropriate word(s).
Find the indicated intercept(s) of the graph of the function.y-intercept of f(x) = 
A. 
B. (0, 0)
C. 
D. (0, 13)
Solve the problem.The final grade for an algebra course is determined by grades on the midterm and final exam. The grades for four students and two possible grading systems are modeled by the following matrices. src="https://sciemce.com/media/4/ppg__tttt0529191404__f1q73g6.jpg" style="vertical-align: -15.0px;" />Find the final course score for Student 3 for both grading System 1 and System 2.
A. System 1: 76.6; System 2: 76
B. System 1: 75; System 2: 92
C. System 1: 48.6; System 2: 53
D. System 1: 83.2; System 2: 83.5
Solve.
- 
= 
A. - 
B. -7
C. - 
D. empty set solution