If the sequence is arithmetic, find the common difference. If the sequence is not arithmetic, say so.3, 6, 12, 24, 48, . . .
A. 6
B. 
C. 2
D. Not arithmetic
Answer: D
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Find the derivative of the function at P0 in the direction of u.f(x, y) = ln(-9x - 4y), P0(4, -7), u = 6i + 8j
A. 
B. 
C. 
D. 
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = sin-1(x2 + y2)
A. Domain: all points in the xy-plane; range: real numbers - 
? z ? 
; level curves: circles with centers at (0, 0)
B. Domain: all points in the xy-plane satisfying x2 + y2 ? 1; range: real numbers - 
? z ? 
; level curves: circles with centers at (0,0) and radii r, 0 < r ? 1
C. Domain: all points in the xy-plane satisfying x2 + y2 ? 1; range: real numbers - 
? z ? 
; level curves: circles with centers at (0, 0)
D. Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at (0, 0)
Graph the function using a graphing utility and the Change-of-Base Formula.y = log8x
A. 
B. 
C. 
D. 
Solve the problem.Two bacteria are placed in a petri dish. The population will triple every hour. How many bacteria are in the dish eight hours after the two bacteria are placed in the dish?
A. 48 B. 1024 C. 13 D. 13,122