Combine like terms.9ab + 6 + 2ab + 3
A. 11ab + 6 + 3
B. 11ab + 9
C. 11a + 11b + 9
D. 9ab + 11
Answer: B
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Determine which numbers in the set are irrational numbers.
6.111..., 
, 0, 
, 
, -8.050550555..., -9?
A. 
, 0, 
, 
, -9?
B. 6.111..., 
, 
, 
, -8.050550555..., -9?
C. 
, 
, -8.050550555..., -9?
D. 
, 
, -9?
E. 
, 
, 
, -9?
Use counting to determine the whole number that corresponds to the cardinality of the set.A = {x|x ? N and (x + 6)(x + 4) = 0}
A. Infinite B. n(A) = 4 C. n(A) = 2 D. n(A) = 6
Determine if the infinite geometric series converges or diverges. If the series converges, find its sum.4 + 
+ 
+ 
+ . . .
A. converges, 
B. converges, 
C. converges, 6
D. diverges
Answer the question.The graph of f'(x) is a parabola with vertex at (a, 0). The parabola opens down. What does this information tell us about the concavity associated with f(x)? Explain.
What will be an ideal response?