Solve the equation.
x = 
A. 
B. 2
C. - 
D. -2
Answer: D
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Solve the problem.If two tangent lines to the hyperbola 16x2 - 4y2 = 64 intersect the y-axis at 
find the points of tangency.
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Rotate the coordinate axes to change the given equation into an equation which has no cross product (xy) term. Identify the graph of the equation as a hyperbola, ellipse, parabola, a straight line, or parallel lines.5x2 + 6xy + 5y2 = 15
A. 8u2 + 2v - 15 = 0; Parabola B. 8u2 - 2v2 - 15 = 0; Hyperbola C. 8u2 + 2v2 - 15 = 0; Ellipse D. 8u2 + 2u - 15 = 0; Parallel lines
Find the first term and the common ratio for the geometric sequence. Round approximations to the nearest hundredth.a2 = 2187, a8 = 3
A. a1 = 6561, r = 0.33 B. a1 = 3, r = 3 C. a1 = 9, r = 3 D. a1 = 19,683, r = 0.33
Translate to a proportion and solve. Round to the nearest hundredth, if necessary.6572 is what percent of 3100?
A. 2.12% B. 21.2% C. 47% D. 212%