Discrete Math Question:

Let f and g be the function from the set of integers to itself, defined by f(x) = 2x + 1 and g(x) = 3x + 4. Then the composition of f and g is ________.
a) 6x + 9
b) 6x + 7
c) 6x + 6
d) 6x + 8

a) 6x + 9

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The domain of the function that assign to each pair of integers the maximum of these two integers is ________. a) N b) Z c) Z + d) Z+ X Z+	__________ bytes are required to encode 2000 bits of data, a) 1 b) 2 c) 3 d) 8