Write a formula for the nth term of the given geometric sequence. Do not use a recursion formula.- 
, - 
, - 
, - 
, ...
A. an = 
n - 1 + 
B. an = - 
+ 
(n - 1)
C. an = - 
n - 1
D. an = - 
+ 
(n - 1)
Answer: C
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Identify the abuse of statistics."7 out of 10 dentists recommend Brand X toothpaste". This finding is based on the results of a survey of 10 randomly selected dentists. What is wrong with this survey?
What will be an ideal response?
Two sides and an angle are given. First, determine whether the given information results in no triangle, one triangle, or two triangles. Solve each resulting triangle.a = 7, b = 9, B = 49°
A. no triangle B. one triangle; A = 76.01°, C = 54.99°, c = 7.60 C. two triangles; A1 = 76.01°, C1 = 54.99°, c1 = 7.60 or A2 = 103.99°, C2 = 27.01, c2 = 12.14 D. one triangle; A = 35.94°, C = 95.06°, c = 11.88
Match the given function to its graph.1) y = 1 + sin x2) y = 1 + cos x3) y = -1 + sin x4) y = -1 + cos xAB
?
CD
?
A. 1A, 2D, 3C, 4B B. 1A, 2C, 3D, 4B C. 1B, 2D, 3C, 4A D. 1A, 2B, 3C, 4D
Rationalize the denominator and simplify. Assume all variables represent nonnegative real numbers.
A. 
B. 2
C. 27
D. 