Find the series' radius of convergence.
A. ?, for all x
B. 1
C. 0
D. 2
Answer: B
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Solve.How long will it take for the population of a certain country to double if its annual growth rate is 
? Round to the nearest year.
A. 7 yr B. 47 yr C. 1 yr D. 16 yr
Solve.How many ways can a president, vice-president, secretary, and treasurer be chosen from a club with 8 members?
A. 1680 B. 70 C. 24 D. 32
Solve the problem.In a complete graph with n vertices there is a total of
A. 
n(n + 1) edges.
B. 
n(n - 1) edges.
C. n(n - 1) edges.
D. n(n + 1) edges.
E. none of these
Provide an appropriate response.Suppose a machine costing $12,000 is to be replaced at the end of 7 years, at which time it will have a salvage value of $6000. In order to provide money at that time for a new machine costing $15,000, a sinking fund is set up into which equal payments are placed at the end of every quarter. If the fund earns 5.6% compounded quarterly, what should each payment be?
Fill in the blank(s) with the appropriate word(s).