Write the set by listing its elements.{a|a is a natural number greater than 9}
A. {9, 18, 27, ...}
B. {9, 10, 11, ...}
C. {10, 11, 12, ...}
D. {10, 12, 14, ...}
Answer: C
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By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = 
A. L = 
, N = 6
B. L = 0, N = 5
C. diverges
D. L = 
, N = 8
Suppose ? is an angle in standard position. Given an equation of the terminal side of ?, give the exact value of the indicated trigonometric function(s). Rationalize denominators if necessary.y = - 
x, Quadrant IVFind cos ? and cot ?.
A. cos ? = - 
; cot ? = - 
B. cos ? = - 
; cot ? = - 
C. cos ? = 
; cot ? = 
D. cos ? = 
; cot ? = - 
Verify that the values of the variables listed are solutions of the system of equations.
x = 5, y = -1, z = 2
A. not a solution B. solution
Find the sum of the geometric series.
A. -4090 B. -4112 C. -4055 D. -4092