Is 2 a factor of 4t+14u?

Yes, 2 is a factor of the expression \(4t + 14u\).

You can factor out 2 from the expression as follows:

\[ 4t + 14u = 2(2t + 7u) \]

Since the expression can be rewritten as \(2(2t + 7u)\), it shows that 2 is indeed a factor of \(4t + 14u\).