Write as a subtraction problem and evaluate.The sum of 6 and -7, decreased by 2
A. [6 + (-2)] + 7; 11
B. [6 + (-7)] + 2; 1
C. [6 - (-7)] - 2; 11
D. [6 + (-7)] - 2; -3
Answer: D
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Solve the problem.The following graph
A. has a single Hamilton circuit (and its mirror-image circuit). B. has no Hamilton circuit. C. has several Hamilton circuits, none of which contain the edge BC. D. has several Hamilton circuits, all of which contain the edge AD. E. none of these
Graph the linear equation using intercepts.y = 0.6x + 1.2
A. 
B. 
C. 
D. 
Find the indicated term for the arithmetic sequence.a1 = -5, d = -2; a8
A. -19 B. 11 C. -21 D. 9
Find the vertex, focus, and directrix of the parabola. Graph the equation.(y + 1)2 = -8(x + 2)
A. vertex: (1, 2)
focus: (-1, 2)
directrix: x = 3
B. vertex: (-2, -1)
focus: (-2, -3)
directrix: y = 1
C. vertex: (2, 1)
focus: (2, -1)
directrix: y = 3
D. vertex: (-2, -1)
focus: (-4, -1)
directrix: x = 0