Write the number as indicated.An expensive telescope has found evidence that the universe contains about113,900,000,000 galaxies. Write the number in words.
A. One hundred thirteen million, nine thousand galaxies
B. One hundred thirteen billion, nine million dollars galaxies
C. One hundred thirteen billion, nine hundred thousand galaxies
D. One hundred thirteen billion, nine hundred million galaxies
Answer: D
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ex+y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines x + y = c B. Domain: all points in the xy-plane; range: real numbers z > 0; level curves: lines x + y = c C. Domain: all points in the first quadrant of the xy-plane; range: all real numbers; level curves: lines x + y = c D. Domain: all points in the first quadrant of the xy-plane; range: real numbers z > 0; level curves: lines x + y = c
Factor completely.x4 - 256
A. (x2 - 16)(x + 4)(x - 4) B. (x + 4)2(x - 4)2 C. (x2 + 16)(x + 4)(x - 4) D. Prime
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The parabola 
and the line 
A. 
B. 
C. 
D. 
Rewrite the expression with a positive rational exponent. Simplify, if possible.2-2/7 ? 23/7
A. 21/7 B. 2-1/7 C. 27/6 D. 26/7