Solve the problem.Suppose that the dollar cost of producing x radios is 
Find the marginal cost when 40 radios are produced.
A. $14
B. $1480
C. -$1480
D. $46
Answer: A
Mathematics
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Divide as indicated.
A. 3 + 2x2y4 - 3x3y B. 3xy + 2x2y4 - 3x3y C. 3 + 2x2y3 - 3x3y2 D. 3 + 2xy4 - 3x2y
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Solve the problem.Find the moment of inertia about the y-axis of the thin infinite region of constant density 
in the first quadrant bounded by the coordinate axes and the curve 
.
A. 
B. 
C. 
D. 
Mathematics
The point P(x, y) on the unit circle that corresponds to a real number t is given. Find the values of the indicated trigonometric function at t.
?Find tan t.
A. 
B. 
C. 
D. 
Mathematics
Plot the complex number.z = 4i
A. 
B. 
C. 
D. 
Mathematics