Simplify.(4r6)4
A. 4r24
B. 256r6
C. 256r24
D. 256r10
Answer: C
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (6x - 5y)3
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c ? 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
Solve the problem.Trains S and T are both traveling in the same direction. Their distance in miles North of Chicago after x hours are computed by the functions fS and fT, respectively, and their graphs are shown in the figure for 
During what time interval is Train T closer to Chicago than Train S? 
A. always, or x ? 0 B. between 3.3 and 8 hours, or 3.3 < x ? 8 C. between 0 and 3.3 hours, or 0 ? x < 3.3 D. after 3.3 hours, or x > 3.3
Provide an appropriate response.Is the following statement true for every positive integer n? 1 + 2 + 3 + ... + n = 
A. No B. Yes C. Cannot be determined
Divide by using long division.
A. 635 R128 B. 635 R258 C. 635 D. 258