Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 
B. -4
C. 2
D. - 
Answer: A
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Determine if the series converges or diverges. If the series converges, find its sum.
A. converges; - 
B. converges; ?
C. diverges
D. converges; 
The table below shows the initial population and growth rate for several large cities. City City 1 City 2 City 3 City 4 Initial population (millions) 8.41 4.77 2.44 5.61 Growth rate 0.17 million per year -0.21 million per year -3.38 million per year 4.13 million per year? Use a formula to express the expected combined population N, in millions, of the four cities after t years. ?
A. 
B. 
C. 
D. 
Estimate the slope of the curve at the indicated point.
A. - 
B. 
C. 2
D. -2
The position vector of a particle is r(t). Find the requested vector.The velocity at t = 4 for r(t) = (8t2 + 2t + 9)i - 2t3j + (2 - t2)k
A. v(4) = 62i - 96j - 8k B. v(4) = 66i - 96j - 8k C. v(4) = 34i - 32j - 4k D. v(4) = 66i + 96j + 8k