Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function 
where k is the current population and t is the time in years. If the current population is 13,000, in how many years is the population expected to be 32,500? (Round to the nearest year.)
A. 8 yr
B. 3 yr
C. 50 yr
D. 5 yr
Answer: A
Mathematics
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Express the following logarithm as specified.ln (1/125) in terms of ln 5
A. -3 ln 5
B. 3 ln 125
C. - 
ln 5
D. 
ln 5
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Graph the inequality.2x + y ? 1
A. 
B. 
C. 
D. 
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Use your estimation skills and the percent shortcuts to select the most reasonable answer. Do not write an equation and solve it.Find 5% of $440.
A. $418 B. $462 C. $147 D. $22
Mathematics
Solve the problem.A certain noise measures 63 decibels. If the intensity is multiplied by 1000, how many decibels will the new noise measure? 
A. 93 decibels B. 66 decibels C. 63,000 decibels D. 189 decibels
Mathematics