Use a graphing calculator and the method of matrix inverses to solve the system. Give 5 decimal places.x - 
y =3.72.85x + y = -8.23
A. {(0, 0)}
B. {(2.61630, -2.88772)}
C. {(-1.57817, -3.73223)}
D. {(3.43297, 0.18882)}
Answer: C
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Evaluate the indicated trigonometric function of the acute angle ?.If ? is an acute angle of a right triangle and if tan ? = 
, then find the value of sin ?.
A. 
B. 
C. 
D. 
Find the union or intersection as indicated.Find A ? B if A = {x|x ? -2} and B = {x|x < 5}
A. {x|x ? -2} B. ? C. {x|-2 ? x < 5} D. {x|x < 5}
Find all rational zeros and factor f(x).f(x) = 6x3 + 19x2 + 8x - 5
A. - 1, - 
, 
; f(x) = (x + 1)(3x - 1)(2x + 5)
B. 1, - 5, - 
; f(x) = (x - 1)(6x + 1)(x + 5)
C. - 1, - 5, 
; f(x) = (x + 1)(6x - 1)(x + 5)
D. 1, - 
, - 
; f(x) = (x - 1)(3x + 1)(2x + 5)
Use the given zero to find the remaining zeros of the function.f(x) = x3 + 6x2 - 14x + 16; zero: 1 + i
A. 1 - i, 8 B. 1 - i, -8 C. 1 - i, 8i D. -8, 8