Graph the function and the indicated tangent line.Graph f(x) = -2x2 and the tangent line to the graph at the point whose x-coordinate is -2.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = - 
, 
< ? < 2?Find cos 
.
A. - 
B. - 
C. 
D. 
Mathematics
Determine whether matrix B is the inverse of matrix A by finding the product AB.A = 
, B = 
A. B = A-1 B. B ? A-1
Mathematics
Identify the equation without completing the square.4y2 - 4x - 2y = 0
A. ellipse B. hyperbola C. parabola D. not a conic
Mathematics
Solve the problem.Susan has been working on a job that will require 45 hours to complete. If she has completed 
of the job, how many hours has she worked?
A. 40 hours
B. 20 hours
C. 5 hours
D. 4
hours
Mathematics