Solve the problem.Suppose that the population of a certain city during a certain time period can be approximated by 
where x is time in years since 2010. By sketching a graph of P(x), estimate during what time period the population of the city would be increasing.
A. Between 2015 and 2045
B. Between 2010 and 2024
C. Between 2015 and 2038
D. Between 2010 and 2038
Answer: D
Mathematics
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Express the following logarithm as specified.ln (1/81) in terms of ln 3
A. - 
ln 3
B. 4 ln 81
C. -4 ln 3
D. 
ln 3
Mathematics
Find all the second partial derivatives.z = 
A. 
= - 
; 
= 
; 
= 
= 
B. 
= - 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= 
D. 
= - 
; 
= 
; 
= 
= 
Mathematics
Find the specified vector or scalar.v = 8i + 5j; Find 
.
A. -6
B. 6i
C. 6
D. 6
Mathematics
Solve the quadratic equation by completing the square.x2 + 4x = 3
A. {-2 ± 
}
B. {-2 ± 2
}
C. {2 ± 
}
D. {-1 ± 
}
Mathematics