Solve the equation on the interval 0 ? ? < 2?.cos2 ? + 2 cos ? + 1 = 0
A. ?
B. 
, 
C. 
, 
D. 2?
Answer: A
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Decide whether the statement makes sense. Explain your reasoning.The government has been borrowing from the Social Security trust fund for many years. This will cause a problem when it has to pay out more in Social Security benefits than it collects in Social Security taxes. Sally, who graduated college in 2005, says that it won't happen in her lifetime but that it might happen in her children's lifetime.
What will be an ideal response?
An ordinary annuity is if the cash flows occur on the first day of each period.
Answer the following statement true (T) or false (F)
You deposit in a fund 10 annual payments of $2,500 each beginning January 1, 2016, with the last deposit being made on January 1, 2025. How much will be in the fund on December 31, 2025, one year after the final payment, if the fund earns interest at 4% compounded annually?
A. ?$21,088 B. ?$28,957 C. ?$30,015 D. ?$31,216
The formula to compute the future value of a single sum is: 
Answer the following statement true (T) or false (F)