Solve the problem.A company's total cost, in millions of dollars, is given by C(t) = 140 - 30e-t where t = time in years. Find the marginal cost when t = 6.
A. 0.07 million dollars per year
B. 0.45 million dollars per year
C. 0.16 million dollars per year
D. 0.35 million dollars per year
Answer: A
Mathematics
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Simplify the rational expression.
A. 
B. 
C. 
D. 
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Completely factor the polynomial or state that the polynomial is prime.15z2 - 4z - 4
A. (15z - 2)(z + 2) B. (3z - 2)(5z + 2) C. (3z + 2)(5z - 2) D. prime
Mathematics
Graph the equation.(y + 1)2 = -5(x + 2)
A. 
B. 
C. 
D. 
Mathematics
Sketch the curve represented by the parametric equations and find its rectangular-coordinate equation. x = 2 cos²t, y = 2 sin²t
What will be an ideal response?
Mathematics