Use the formula for Sn to find the sum of the first five terms of the geometric sequence. Round to the nearest hundredth, if necessary.2, -6, 18, -54, . . .
A. -122
B. -242
C. 242
D. 122
Answer: D
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Find the missing value so that the line containing the two points will have the required slope.(x, -9) and (-8, -1); m = - 
A. -8 B. 0 C. -9 D. 7
Solve the problem.Find the point of diminishing returns (x, y) for the function 
, 
, where R(x) represents revenue in thousands of dollars and x represents the amount spent on advertising in tens of thousands of dollars. (The point of diminishing returns is represented by the point of inflection.)
A. (64.79, -39,678.36) B. (18, 28,748) C. (14, 24,076) D. (15, 25,250)
Solve the triangle.a = 5, c = 4, B = 90°
A. b = 6.4, A = 38.6°, C = 51.4° B. b = 7.4, A = 51.4°, C = 38.6° C. b = 5.4, A = 38.6°, C = 51.4° D. b = 6.4, A = 51.4°, C = 38.6°
Plot the points in a scatterplot. Use ZoomStat to ensure all points appear on the screen.
A. 
B. 
C. 
D. 