Question

Check my answer? Fan and medal.
Which represents the domain of the function?
*attached in the comments*
A. {3,5,7,9}
B. {0,2,4,6,8}
C. all real numbers greater than or equal to 0.
D. all real numbers greater than or equal to 3
I think its a.

Answer 1

do you see any pattern there??

if you add/subtract a number from g(n), you get the value of n....

Answer 2

You are given a table of values that define a function; this table has five separate points
(n, f(n) ). Simply write the set of input values and you're done. That's your domain.

The domain of a function is the set of all input (n-) values for which the given function is defined.

Note that this function is not defined at n=0 (there's no corresponding f(0).
Note that this function IS defined at n=11; f(11) = 8.

Does {3,5,7,9} contain ALL of the n values for which f(n) is defined? Yes or No

If not, {3,5,7,9} is not the domain. If yes, {3,5,7,9} is the domain.

If not, could YOU construct a set which represents the domain of this function?