Find all values x = a where the function is discontinuous.f(x) = 
A. Nowhere
B. a = 9, 6
C. a = 6
D. a = -9, 9, 6
Answer: C
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Use the dot product to determine whether the vectors are parallel, orthogonal, or neither.v = 2i - j, w = 4i - 2j
A. parallel B. orthogonal C. neither
Solve the problem.The number of quarters needed to double an investment when a lump sum is invested at 10%, compounded quarterly, is given by n = log1.025 2. In how many years will the investment double, to the nearest tenth of a year?
A. 28.1 years B. 7.0 years C. 3.5 years D. 14.0 years
Using the graph, determine any relative maxima or minima of the function and the intervals on which the function is increasing or decreasing. Round to three decimal places when necessary.f(x) = 
x3 + 
x2 - x + 1
A. relative maximum: 0.684 at x = 0.549; relative minimum: 2.056 at x = -1.215; increasing 
decreasing 
B. relative maximum: 2.056 at x = -1.215; relative minima: 0.684 at x = 0.549 and 1 at x = 0; increasing 
decreasing 
C. relative maximum: 2.056 at x = -1.215; relative minimum: 0.684 at x = 0.549; increasing 
decreasing 
D. no relative maxima or minima; increasing 
decreasing 
Find an equation for the conic. If the conic is a parabola, assume that the vertex is at the origin. If the conic is an ellipse or hyperbola, assume that it is centered at the origin.Focus at (4, 0) and e = 1
A. 4x = y2 B. 4y = x2 C. 16y = x2 D. 16x = y2