Answer
$v=7.9m/s$
Work Step by Step
The velocity of a wave is equal to $$v=f \lambda $$ To find the frequency, use dimensional analysis. $$\frac{14 waves}{1min} \times \frac{1min}{60s}=0.233waves/s$$ Substituting known values of $f=0.233Hz$ and $\lambda=34m$ yields a velocity of $$v=(0.233Hz)(34m)=7.9m/s$$
