Solve the problem.The number of periods needed to double an investment when a lump sum is invested at 11%, compounded semiannually, is given by n = 
. Find n, rounded to the nearest tenth.
A. 12.9 periods
B. 17.9 periods
C. 8.9 periods
D. 15.9 periods
Answer: A
Mathematics
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Solve the problem.If the temperature in the city has risen 5° each day, how much has it risen in 5 days?
A. 10° B. 35° C. 30° D. 25°
Mathematics
Solve the problem.A hockey team in one game scored on 20% of the total number of shots on its opponent's goalie. If the team scored a total of 8 goals, then how many shots did they direct at the opponent's goalie?
A. 60 B. 20 C. 80 D. 40
Mathematics
Multiply.i(3 - 7i)(8 - 4i)
A. 52 - 44i B. 28i3 + 68i2 + 24i C. -68 + 4i D. 68 - 4i
Mathematics
Find the relative extrema of the function and classify each as a maximum or minimum.f(x) = -10x2 - 2x - 3
A. Relative maximum: 
B. Relative maximum: 
C. Relative maximum: 
D. Relative minimum: 
Mathematics