Choose the correct options for the following questions.
$\lim_{x \rightarrow 4}(4x^{2}-5x-1)=$
Difficulty: Easy
A:
43
B:
64
C:
20
D:
44
$\lim_{x \rightarrow 3}\frac{x^{2}+3x}{x+3}$=
Difficulty: Easy
A:
1
B:
3
C:
1/9
D:
27
$\lim_{x \rightarrow 3}\frac{4}{x-3}$=
Difficulty: Easy
A:
0
B:
1
C:
4/3
D:
Not exist
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