Solve the inequality and graph. Express your answer in interval notation.-4(-2 - x) < 6x + 19 - 11 - 2x
A. (-?, 8)
B. ?
C. (-?, 0)
D. (-?, ?)
Answer: B
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Use the total differential dz to approximate the change in z as (x, y) moves from P to Q. Then use a calculator to find the corresponding exact change ?z (to the accuracy of your calculator).ln (xy2); P(5, -1), Q(4.95, -.99)
A. dz = 0.03; ?z = 0.0301510076 B. dz = -0.3; ?z = -0.301510076 C. dz = 0.3; ?z = 0.301510076 D. dz = -0.03; ?z = -0.0301510076
Multiply.-9(-10)
A. 90
B. 
C. -19
D. -90
Solve the system of equations by substitution, if a solution exists.
A. x = 0, y = -2 B. x = 1, y = -3 C. x = -3, y = 1 D. No solution
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 + 6y - 27 = 0
A. x2 + (y - 3)2 = 36 center (0, 3), r = 6 B. (x + 3)2 + y2 = 36 center (-3, 0), r = 6 C. x2 + (y + 3)2 = 36 center (0, -3), r = 6 D. x2 + (y + 3)2 = 36 center (0, 3), r = 6