the answer is still 3
if u graph f(x) = 3 you get a straight line
so f(x) = 3 for all real numbers
By "f(x) = 3", do you mean "f(x) = 3 for all x"?
he probably meant f(x) = 3 for all x
otherwise it would've been f(a) = 3......
Assuming he wrote it correctly, that's all it could mean!
In case you come across a similar problem, f(x-ct) translates f(x) to the right by ct.
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