A particle’s position as a function of time is described as $\mathrm{y}\left(\mathrm{t}\right)=2{\mathrm{t}}^2+3\mathrm{t}+4.$ What is the average velocity of the particle from  $\mathrm{t}=0\mathrm{to}\mathrm{t}=3\sec ?$

• A

  3 m/sec

• B

  6 m/sec

• C

  9 m/sec

• D

  12 m/sec