Solve the equation.
= 7
A. {9}
B. {21}
C. {2}
D. {10}
Answer: B
Mathematics
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Solve.The population of a town was about 47,000 in 1910. In 1935, the population was about 83,000. Assuming the exponential model, what was the growth rate of the town, to the nearest hundredth of a percent, during this period?
A. 2.27 % per year B. 4.4 % per year C. 1.26 % per year D. 22.75 % per year
Mathematics
Find the curvature of the curve r(t).r(t) = (9 + ln(sec t))i + (7 + t)k, -?/2 < t < ?/2
A. ? = cos t B. ? = -cos t C. ? = 1 - cos t D. ? = sin t
Mathematics
Find the divergence of the field F.F = 
A. 
B. 
C. 
D. 0
Mathematics
Match the given equation with one of the graphs.16x2 + y2 - 160x + 384 = 0
A. 
B. 
C. 
D. 
Mathematics