exam Maths Puzzle Numerical Ability

Determine whether it is rational or irrational:

3 sqrt 121

I believe this is rational, is this correct? Thank you

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exam Other Question
x-1/x+2 = 2x-3/x+4 Solve for the Variable: 3x2^ + 4x = 0

a) 0 only
b) 0 or 3/4
c) 0 or 4/3
d) 0 or -4/3
e) None of these