Solve the problem.A company's total cost, in millions of dollars, is given by C(t) = 120 - 80e-t where t = time in years. Find the marginal cost when t = 2.
A. 16.24 million dollars per year
B. 21.65 million dollars per year
C. 7.97 million dollars per year
D. 10.83 million dollars per year
Answer: D
Mathematics
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Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300 B. $0.60 C. $1 D. $100
Mathematics
Factor out the greatest common factor.4(6y - 1)4 + 10(6y - 1)5
A. (6y - 1)(10y - 1) B. 6(6y - 1)4(10y - 1) C. (6y + 1)(10y + 1) D. 6(6y + 1)4(10y + 1)
Mathematics
Simplify.71 - 8 ? 6 + 128 ÷ (-8)
A. 7 B. 362 C. -25 D. -1055
Mathematics
Find an expression equivalent to the one given.
A. - 
B. - 
C. 
D. 
Mathematics