Find the domain of the composite function f ? g.f(x) = 
; g(x) = 
A. {x 
B. {x 
C. {x 
D. {x 
Answer: C
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Determine if the series converges or diverges; if the series converges, find its sum.
A. Converges; 
B. Converges; e20
C. Converges; 
D. Diverges
Solve the problem. Use the correct number of significant digits.The sun is surrounded by an extremely hot plasma called the "corona". The average kinetic energy E of a subatomic particle in the corona can be approximated by the model E = 
kT, where E is in joules, T is the Kelvin temperature of the corona, and k is Boltzmann's constant, 
At a certain distance above the sun's north pole, a measurement indicates that the average kinetic energy of coronal particles is 0.00 J. Estimate the temperature in this region.
A. 9.80 × 106 K B. 6.53 × 106 K C. 9.80 × 105 K D. 1.02 × 10-7 K
Rewrite using a negative exponent.
A. 7-2 B. 2-8 C. 2-7 D. 27
Write sigma notation.9 + 27 + 81 + 243 + 729
A. 
B. 
C. 
D. 