Solve.The population of a certain country is growing at a rate of 2.3% per year. How long will it take for this country's population to double? Use the formula 
which gives the time, t, for a population with growth rate k, to double. Round to the nearest year.
A. 31 yr
B. 32 yr
C. 29 yr
D. 30 yr
Answer: D
Mathematics
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A. y = 
, 
B. y = - 
, - 
C. y = 
, - 
D. y = - 
, - 
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- 4(9 - 3)
A. 176 B. 16 C. 64 D. 88
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- 8 = 
- 2
A. 
B. 
C. 
D. 
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A. (-?, -5) or (-2, ?) B. (-?, -5) C. (-5, -2) D. (-2, ?)
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