Solve the problem.A bookstore has an annual demand for 67,000 copies of a best-selling book. It costs $0.60 to store one copy for one year, and it costs $65 to place an order. Find the optimum number of copies per order.
A. 4919 copies
B. 3810 copies
C. 4365 copies
D. 3429 copies
Answer: B
Mathematics
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Use the appropriate sum or difference identity to write the given expression as a function of x alone.cos (x + 2?)
A. -cos x B. cos x C. -sin x D. sin x
Mathematics
Provide an appropriate response.It can be shown that the inequality-x ? x cos 
? x holds for all values of x ? 0. Find 
x cos 
if it exists.
A. 0 B. 1 C. 0.0007 D. Does not exist
Mathematics
Solve the problem.Six Republicans and six Democrats orally cast their vote in the U.S. Senate. In how many orders can they vote if the first person to vote must be a Democrat?
A. 6 × 11!
B. 6! × 6!
C. 
D. 12!
E. none of these
Mathematics
Find the equation of the tangent to the curve at the given point.
Mathematics